There is a particular kind of hunger that shows up when you are trying to lose weight.
It is not dramatic at first. It starts quietly: a little restlessness after lunch, a glance toward the kitchen, the mental bargaining that begins around 3 p.m. You do not necessarily want a full meal. You want something that feels satisfying enough to stop the spiral.
That is where protein bars earn their place.
Not because they are magic. Not because the words “high protein” make a snack automatically virtuous. And definitely not because a bar, by itself, melts fat. The best protein bars for weight loss work for a much more practical reason: they make the next good decision easier.
They give you protein when you are underfed. They give you sweetness when your brain wants dessert. They give you something structured when your day is messy and the drive-thru is starting to look reasonable.
But here is the catch: plenty of protein bars are just candy bars wearing gym clothes.
So this ranking uses a dietitian-style scorecard. The goal is not to find the trendiest wrapper or the bar with the loudest marketing claim. The goal is to identify the protein bars that deliver where weight loss actually lives: protein, calories, added sugar, fiber, fullness, texture, and repeatability.
Quick answer: The best protein bars for weight loss are high enough in protein to support fullness, moderate enough in calories to fit a calorie deficit, low enough in added sugar to avoid becoming dessert by accident, and satisfying enough that you do not immediately start looking for something else to eat.
Protein can be helpful during weight loss because higher-protein eating patterns are linked with greater satiety and better preservation of lean mass during calorie restriction. Research reviews have found that protein tends to increase fullness more than carbohydrate or fat and may support appetite control, thermogenesis, and fat-free mass maintenance. Source: PubMed High-protein diets have also been studied for their role in reducing lean-mass loss during weight reduction. Source: PMC
Sugar deserves just as much attention. The FDA’s Nutrition Facts guidance notes that 5% Daily Value or less is low for added sugars, while 20% Daily Value or more is high. Source: FDA
That simple label reality changes everything. A protein bar can have impressive macros on the front and still be a poor daily choice once you turn it over.
Best Protein Bars for Weight Loss: The Dietitian-Style Ranking at a Glance
If you just want the short list, start here. If you want to understand why one bar belongs in your bag and another belongs in the “only sometimes” category, keep going.
| Rank | Protein Bar | Best For | Why It Ranks |
|---|---|---|---|
| 1 | Quest Chocolate Chip Cookie Dough Protein Bar | Best overall weight-loss protein bar | High protein, very high fiber, low sugar, excellent protein-to-calorie ratio |
| 2 | ONE Birthday Cake Protein Bar | Best dessert-style bar | 20g protein, low sugar, moderate calories, strong craving-control appeal |
| 3 | Barebells Cookies & Cream Protein Bar | Best taste-to-protein balance | 20g protein, no added sugar claim, candy-bar texture without the usual sugar load |
| 4 | Pure Protein Chocolate Peanut Butter Bar | Best budget-friendly high-protein bar | 20g protein, low sugar, easy to find, practical for everyday use |
| 5 | ALOHA Peanut Butter Chocolate Chip Protein Bar | Best plant-based bar with fiber | Organic plant protein, 10g fiber, no sugar alcohol sweeteners |
| 6 | No Cow Peanut Butter Chocolate Chip Protein Bar | Best vegan low-sugar high-protein bar | 20g plant protein, low sugar positioning, dairy-free fitness-bar profile |
| 7 | RXBAR Chocolate Sea Salt | Best simple-ingredient bar | Whole-food-style ingredient list, 0g added sugar, satisfying chew |
| 8 | KIND Protein Crunchy Peanut Butter | Best nut-forward bar | Crunchy, satisfying, fiber-rich, better for texture lovers than macro purists |
This is not a morality ranking. Nobody gets extra character points for eating one bar over another.
It is a usefulness ranking.
The best protein bar for weight loss depends on the problem you need it to solve. Hunger. Cravings. Travel. Post-workout recovery. Breakfast chaos. Ingredient trust. Vegan protein. A bar that solves the wrong problem is still the wrong bar, even if the label looks perfect.
The Scorecard: How a Protein Bar Earns a Place on This List
A protein bar has to pass more than one test.
That matters because weight-loss food marketing tends to flatten everything into one shiny claim: high protein, low carb, keto, plant-based, gluten-free, clean, organic, zero sugar, low calorie. Some of those claims are useful. Some are distractions. Some are just noise.
A weight-loss-friendly protein bar needs a better filter.
Protein-to-Calorie Ratio: The Number That Tells the Truth Fast
Protein is the reason most people buy the bar in the first place.
For weight loss, a good bar usually lands somewhere around 12 to 21 grams of protein without pushing calories so high that the snack becomes a stealth meal. More protein is not automatically better if it comes with too many calories for the moment you are eating it.
A practical label check:
- Excellent: 20g or more protein under roughly 220 calories
- Good: 12–19g protein under roughly 250 calories
- Use carefully: under 10g protein or over 250 calories, unless it is replacing part of a meal
This is where people get tricked. A bar can shout “20g protein” and still be too calorie-dense for the way you are using it. Another bar can look modest but fit beautifully as a controlled snack.
The question is not just, “How much protein does it have?”
The better question is, “What am I getting for the calories?”
Added Sugar: Where Healthy-Looking Bars Lose Their Halo
Added sugar is not evil. But it is expensive real estate inside a weight-loss snack.
If a protein bar is meant to help with appetite control, cravings, or calorie management, added sugar should be low enough that the bar still behaves like a tool rather than a treat pretending to be a tool.
The FDA’s label guidance is helpful here: 5% Daily Value or less is low, and 20% Daily Value or more is high for added sugars. Source: FDA
That does not mean every bar must have zero sugar. It means sugar should be visible in the decision, not hidden behind protein branding.
Fiber and Fullness: The Difference Between “I Ate” and “I’m Done”
Protein helps. Fiber helps too.
The best protein bars for weight loss often combine both, because fullness is not just a number on a nutrition label. It is a feeling. It is whether your brain accepts that eating is finished.
Fiber can add chew, density, and staying power. It can help a bar feel more substantial. But fiber has a personality. Some people tolerate high-fiber bars beautifully; others get bloated, uncomfortable, or regretful.
So the goal is not maximum fiber at all costs. The goal is enough fiber to support satiety without turning your digestive system into the main event.
Calories: The Bar Needs a Job
A 190-calorie bar can be smart. A 250-calorie bar can also be smart. The difference is context.
Use this as a rough guide:
- 150–220 calories: ideal for snacks, cravings, gym bags, desk drawers
- 220–280 calories: better for breakfast backup or partial meal replacement
- 280+ calories: should be treated more like a meal component than a casual snack
A higher-calorie bar is not a failure. Eating it mindlessly on top of your regular meals is where the problem begins.
Give the bar a job before you open it.
Taste and Repeatability: The Part Diet Culture Likes to Pretend Doesn’t Matter
People do not stick with food they resent.
That is why taste belongs in the scorecard. Texture belongs there too. Sweetness, chew, crunch, salt, chocolate, peanut butter, softness, density—these details decide whether a protein bar becomes a useful routine or a box in the pantry that nobody touches.
The best bar is not the most theoretically perfect bar. It is the one that helps you repeat the behavior you wanted.
1. Quest Chocolate Chip Cookie Dough Protein Bar: Best Overall
Best for: High-protein snacking, appetite control, low-sugar diets, gym bags
Scorecard profile: High protein, very high fiber, low sugar, strong calorie efficiency
Quest Chocolate Chip Cookie Dough takes the top spot because it does the hardest thing in this category: it delivers high protein, serious fiber, low sugar, and moderate calories in the same bar.
CalorieKing lists the bar at 190 calories, 21g protein, 14g fiber, and 0.5g sugar. Source: CalorieKing
That combination makes it one of the strongest choices for someone trying to lose weight while staying full between meals.
Why It Works for Weight Loss
Quest works because it is not leaning on protein alone. The protein supports fullness. The fiber adds weight and chew. The low sugar keeps the bar from drifting into candy territory.
This is the kind of bar that makes sense when hunger is predictable: mid-afternoon, after training, during travel, or before the stretch of the day where you usually make less thoughtful choices.
There is also a psychological advantage. Cookie dough sounds indulgent. The nutrition profile behaves more strategically. That contrast makes the bar feel less like a compromise.
Where It Falls Short
The same fiber that makes Quest filling can make it too much for some people. If high-fiber bars bother your stomach, start with one bar, not a whole box.
The texture is also polarizing. Some people love the dense chew. Others want something softer or more candy-like.
Best Way to Use It
Use it as a planned snack when hunger would otherwise send you searching. It works best when it replaces a less helpful option, not when it becomes an automatic extra after a full meal.
2. ONE Birthday Cake Protein Bar: Best Dessert-Style Bar
Best for: Sweet cravings, dessert replacement, low-sugar treat seekers
Scorecard profile: High protein, low sugar, moderate calories, strong emotional payoff
Some weight-loss snacks fail because they answer the wrong question.
The body asks for food. The brain asks for pleasure. A plain, joyless snack may answer the body and leave the brain unsatisfied. That is why dessert-style protein bars can be useful when they are built well.
ONE Birthday Cake is designed for the person who wants sweetness without letting dessert take over the calorie budget.
A listed nutrition panel for ONE Birthday Cake shows 210 calories, 20g protein, 7g fiber, 1g sugar, and 0g added sugars. Source: Amazon product listing The brand’s own product page also highlights 20g protein and 1g sugar for the Birthday Cake bar. Source: ONE Brands
Why It Works for Weight Loss
This bar understands craving psychology.
Sometimes you do not want a wholesome handful of almonds. You want cake. Frosting. Sweetness. A little sense of celebration after a long day of restraint.
If ONE replaces a higher-calorie dessert, it can be useful. Not because it is magic, but because it creates a controlled landing place for a craving that might otherwise keep searching.
Where It Falls Short
Dessert-style bars can backfire for people who find that sweet flavors trigger more sweet cravings. If one sweet bar makes you want two more sweet things, choose a less dessert-like option.
Best Way to Use It
Use it deliberately as a dessert replacement or sweet afternoon snack. It works best when the craving is emotional and specific, not when your body truly needs a meal.
3. Barebells Cookies & Cream Protein Bar: Best Taste-to-Protein Balance
Best for: Candy-bar texture, high-protein dessert replacement, low added sugar preference
Scorecard profile: High protein, dessert-style taste, no added sugar claim
Barebells has earned a loyal following because it does not taste like punishment.
The Cookies & Cream bar is especially strong for people who want a protein bar that feels closer to a candy bar than a dense nutrition block. The brand states that Cookies & Cream contains 20g protein and no added sugar, while noting that it is not a low- or reduced-calorie food. Source: Barebells A nutrition database listing places Barebells Cookies & Cream at 200 calories and identifies it as a good source of protein. Source: Eat This Much
Why It Works for Weight Loss
Barebells succeeds because it respects the part of weight loss nobody likes to admit: satisfaction matters.
A snack can be nutritionally tidy and still leave you irritated. That irritation has consequences. It can turn into grazing, bargaining, or the familiar “I’ll just start again tomorrow” script.
A high-protein bar that feels like a treat can reduce that friction. Barebells gives the reader permission to want pleasure without abandoning structure.
Where It Falls Short
This is not the best pick for people who prioritize minimal ingredients. It also contains milk and soybean allergens according to the brand’s product information, so label-checking matters. Source: Barebells
Best Way to Use It
Use it as a dessert swap, a coffee-pairing snack, or a controlled evening treat when you want something sweet but still want the day to stay intact.
4. Pure Protein Chocolate Peanut Butter Bar: Best Budget-Friendly High-Protein Bar
Best for: Affordable high-protein snacking, gym bags, convenience stores
Scorecard profile: High protein, low sugar, easy to find
Pure Protein is not trying to be luxurious. That is part of its appeal.
It is the kind of bar you can find in ordinary places, often at ordinary prices, without needing to chase a niche brand online. For weight loss, that matters more than people think. The perfect bar you cannot find is less useful than the good bar sitting at the checkout when hunger is getting loud.
A retail listing for Pure Protein Chocolate Peanut Butter describes it as containing 20g protein, 200 calories, and 2g sugar. Source: Ralphs Another listing describes 20g protein, 3g sugar, and 190 calories, which is a useful reminder that labels can vary by product version, retailer, and reformulation. Source: Amazon
Why It Works for Weight Loss
Pure Protein is practical. It gives you the big thing you came for—around 20g protein—without turning into a sugar-heavy snack.
This is a strong “better default” bar. It makes sense when the alternative is a pastry, chips, or a candy bar grabbed because you waited too long to eat.
Where It Falls Short
Ingredient minimalists may not love it. This is a functional fitness bar, not a whole-food-style snack.
Best Way to Use It
Keep it in a desk drawer, gym bag, or car. Use it when convenience is the threat and consistency is the goal.
5. ALOHA Peanut Butter Chocolate Chip Protein Bar: Best Plant-Based Bar with Fiber
Best for: Vegan diets, organic preference, fiber-focused snacking, avoiding sugar alcohol sweeteners
Scorecard profile: Moderate protein, high fiber, plant-based, higher calories
ALOHA Peanut Butter Chocolate Chip is not the most protein-efficient bar here. It earns its place because it solves a different problem.
Some people want a plant-based bar that feels closer to real food. They want fiber. They want recognizable positioning. They want to avoid dairy, soy, gluten, stevia, and sugar alcohol sweeteners.
ALOHA says this bar provides 14g plant-based protein, 10g fiber, and 5g sugar, and that it is free from soy, dairy, gluten, GMOs, stevia, and sugar alcohol sweeteners. Source: ALOHA A nutrition listing places the bar at 240 calories. Source: Eat This Much
Why It Works for Weight Loss
ALOHA is about staying power and trust.
The 10g fiber helps it feel more substantial. The plant-based profile fits vegan and dairy-free shoppers. The absence of sugar alcohol sweeteners may appeal to people whose stomachs do not tolerate many low-sugar bars well.
Where It Falls Short
If you are chasing the highest protein for the fewest calories, ALOHA does not outrank Quest, ONE, Barebells, Pure Protein, or No Cow.
This is a strong plant-based snack bar with meaningful protein, not the leanest macro machine in the lineup.
Best Way to Use It
Use it as a breakfast backup, travel snack, or afternoon bridge when you want plant-based protein with more fiber and a softer ingredient story.
6. No Cow Peanut Butter Chocolate Chip Protein Bar: Best Vegan Low-Sugar High-Protein Bar
Best for: Vegan high-protein diets, dairy-free users, low-sugar shoppers
Scorecard profile: High plant protein, low sugar, functional vegan positioning
Many vegan protein bars face the same problem: they taste pleasant, but they do not deliver much protein. No Cow takes a different route.
A product listing states that the Peanut Butter Chocolate Chip bar provides 20g plant-based protein and 1g sugar. Source: Amazon The brand positions its bars as high in plant-based protein and fiber and low in sugar. Source: No Cow
Why It Works for Weight Loss
No Cow gives plant-based eaters a true high-protein option. That is its main advantage.
For someone avoiding dairy, this can fill the role that whey-based bars often occupy: post-workout snack, travel protein, between-meal hunger control, or backup food on a day when meals are uneven.
Where It Falls Short
Texture can divide people. High-protein vegan bars are often dense, chewy, or slightly powdery. Some people enjoy that. Others absolutely do not.
Do not buy a full box until you know which camp you are in.
Best Way to Use It
Use it when you need dairy-free protein with low sugar and more macro structure than a typical plant-based snack bar.
7. RXBAR Chocolate Sea Salt: Best Simple-Ingredient Bar
Best for: Simple ingredients, no added sugar, whole-food-style snacking
Scorecard profile: Moderate protein, good fiber, higher total sugar from dates, 0g added sugar
RXBAR Chocolate Sea Salt has a different kind of appeal. It does not feel engineered in quite the same way as many fitness bars. It leans into a short, recognizable ingredient style: egg whites, dates, nuts, chocolate, sea salt.
The nutrition panel lists 200 calories, 12g protein, 5g fiber, 14g total sugars, and 0g added sugars. Source: SmartLabel The brand’s product page shows a similar nutrition profile for Chocolate Sea Salt. Source: RXBAR
Why It Works for Weight Loss
RXBAR works best for the person who wants simplicity more than maximum protein efficiency.
The chew is satisfying. The salt helps. The dates and nuts make it feel more like food than a protein candy bar. For some people, that matters more than squeezing every possible gram of protein out of the calorie count.
Where It Falls Short
This is not the best bar if you want 20g protein. It is also not ideal if you are closely watching total sugar, even though the sugar comes from dates and the label shows 0g added sugar.
Best Way to Use It
Use it as a simple-ingredient snack, hiking bar, travel bar, or coffee-side option when you want something chewy and substantial.
8. KIND Protein Crunchy Peanut Butter: Best Nut-Forward Bar
Best for: Nut lovers, crunchy texture, people who dislike traditional protein bars
Scorecard profile: Higher-calorie snack, moderate protein, good fiber, real-food texture
KIND Protein Crunchy Peanut Butter does not eat like a typical protein bar. It eats like a crunchy nut bar, which can be exactly the point.
The brand’s nutrition listing shows 250 calories, 18g fat, 6g fiber, 7g total sugar, and 5g added sugar. Source: KIND A nutrition database describes the bar as a good source of protein and fiber. Source: Eat This Much
Why It Works for Weight Loss
This bar is not here because it wins the protein-per-calorie contest. It does not.
It is here because satisfaction can be strategic. Crunch, peanuts, and fat can make a snack feel finished. For someone who keeps eating after lower-calorie snacks because they never quite feel complete, that can matter.
Where It Falls Short
At 250 calories, it should be used intentionally. It is better as a substantial snack than as something casually added after a meal.
Best Way to Use It
Use it when texture and satiety matter more than maximum protein density. It is especially useful for people who dislike soft, chewy protein bars.
What Makes a Protein Bar Good for Weight Loss?
A protein bar is good for weight loss when it helps you stay consistent.
That sounds simple, but it is the whole story.
A good bar can help by doing one of four things:
- Replacing a higher-calorie snack
- Preventing impulsive eating
- Helping you reach your protein target
- Satisfying a craving before it grows teeth
A bad fit does the opposite. It adds calories without reducing hunger. It tastes healthy but not satisfying. It creates the illusion of progress while quietly making the day harder.
The best protein bars for weight loss usually share a few traits:
- 12–21g protein
- 150–250 calories for most snack uses
- Low added sugar
- At least a few grams of fiber, if tolerated
- A taste and texture you can actually live with
That last point looks small. It is not.
Consistency has a flavor.
Protein Bars vs. Meal Replacement Bars: Do Not Confuse the Two
A protein bar is usually a snack. A meal replacement bar should be more complete.
That distinction matters because a 190-calorie protein bar may look like a smart breakfast, but your body may disagree two hours later. If the bar is standing in for a meal, it may need help: fruit, Greek yogurt, cottage cheese, coffee with milk, or another protein source depending on your needs.
Best Protein Bar by Weight-Loss Situation
Different days require different bars. That is not inconsistency. That is strategy.
When You Need to Stay Full Until Dinner
Choose Quest or ALOHA.
Quest gives you the strongest protein-and-fiber punch. ALOHA gives you plant-based protein with a softer, more ingredient-conscious feel.
When You Want Something Sweet After Dinner
Choose ONE or Barebells.
These bars work best when the craving is not just hunger but dessert. They offer sweetness, texture, and a sense of reward without the same sugar profile as traditional candy or cake.
When You Need a Post-Workout Bar
Choose Quest, Barebells, Pure Protein, or No Cow.
Post-workout users often want a higher-protein bar. The right choice depends on whether you prefer whey-based, dairy-free, vegan, low-sugar, or budget-friendly options.
When You Are Traveling
Choose RXBAR, Pure Protein, Quest, or KIND.
Travel food needs to survive bad timing. Flights get delayed. Meetings run long. Gas stations become decision points. A reliable bar can stop convenience from becoming chaos.
When You Eat Vegan or Dairy-Free
Choose No Cow or ALOHA.
No Cow is better for high-protein, low-sugar macro targeting. ALOHA is better for people who want plant-based protein, fiber, and no sugar alcohol sweeteners.
When You Care Most About Simple Ingredients
Choose RXBAR or ALOHA.
These may not win every macro contest, but they speak to the reader who wants a label that feels less like a chemistry quiz.
The Mistake Nobody Talks About: Eating the Bar Without Assigning It a Role
Protein bars become a problem when they become vague.
A vague bar is the one you eat because it is there. Because the wrapper says protein. Because you already bought the box. Because it feels healthier than cookies, even though you were not hungry.
That pause is small. It changes the whole snack.
The best protein bar for weight loss is not just the one with the best numbers. It is the one eaten at the right moment for the right reason.
How to Choose the Best Protein Bar for Your Body
The label matters. Your pattern matters more.
If You Are Always Hungry
Look for protein plus fiber. Quest is the most obvious choice from this ranking. ALOHA can also work if you prefer plant-based ingredients and tolerate its calorie level well.
Pair the bar with water, coffee, fruit, or yogurt if you need more volume.
If You Crave Dessert at Night
Look for a bar that feels like dessert but does not behave like a sugar bomb. ONE and Barebells are strong choices.
The trick is to plan it. A planned sweet snack feels controlled. A random sweet snack can become an opening argument.
If You Want Simple Ingredients
RXBAR and ALOHA are stronger fits. Just remember that simple does not always mean lower calorie or higher protein.
Read the full label, not just the ingredient list.
If You Are Vegan
No Cow gives you the higher-protein, lower-sugar profile. ALOHA gives you more fiber and a more organic, whole-food-style feel.
Both can work. They solve different problems.
If You Are Cutting Calories Aggressively
Choose a bar under roughly 220 calories with at least 15–20g protein when possible.
Quest, ONE, Barebells, and Pure Protein are the strongest fits in this category.
If Sugar Alcohols Bother You
Read labels carefully. Many low-sugar bars use sugar alcohols or isolated fibers. Some people tolerate them well. Some do not.
ALOHA and RXBAR-style bars may feel gentler for certain people, though you still need to watch calories and total sugar.
Featured Snippet Answer: Are Protein Bars Good for Weight Loss?
Protein bars can be good for weight loss when they replace higher-calorie snacks, increase protein intake, and help manage hunger. The best options usually provide 12–21g protein, moderate calories, low added sugar, and enough fiber or texture to feel satisfying. They do not cause weight loss by themselves; overall calorie balance and diet quality still matter.
Featured Snippet Answer: What Should I Look for in a Protein Bar for Weight Loss?
Look for a protein bar with a strong protein-to-calorie ratio, low added sugar, moderate calories, and at least a few grams of fiber if your body tolerates it. For most weight-loss snacks, a useful range is about 150–250 calories with 12–21g protein.
FAQ: The Questions People Actually Ask Before Buying Protein Bars for Weight Loss
Which protein bar is best for weight loss if I only want one answer?
Quest Chocolate Chip Cookie Dough is the strongest overall pick in this scorecard because it combines high protein, very high fiber, low sugar, and moderate calories. CalorieKing lists it at 190 calories, 21g protein, 14g fiber, and 0.5g sugar. Source: CalorieKing
Are protein bars actually healthy, or is that just marketing?
Some are useful. Some are basically candy with protein added. The difference is on the label. Check protein, calories, added sugar, fiber, saturated fat, and ingredients before trusting the front of the wrapper.
How much protein should a bar have if I am trying to lose weight?
For most people, a snack bar should have at least 12g protein. If you want it to keep you full for longer, support workouts, or act as a serious hunger-control tool, closer to 20g protein is usually better.
Is low sugar more important than high protein?
You need both to work together. A high-protein bar with a lot of added sugar may not be ideal for daily weight-loss snacking. A low-sugar bar with very little protein may not keep you full. The best protein bars for weight loss balance protein, calories, sugar, fiber, and satisfaction.
Can I eat a protein bar every day and still lose weight?
Yes, if it fits your calorie needs and helps you stay consistent. No, if it becomes an extra snack that pushes your total intake higher. The bar needs to replace or prevent something, not just sit on top of everything else.
Will protein bars help me lose belly fat?
Protein bars do not target belly fat specifically. They may support fat loss if they help you control calories, eat more protein, manage hunger, and stay consistent with your broader plan.
Are vegan protein bars good for weight loss?
They can be. Look for enough protein, moderate calories, low added sugar, and ingredients you digest well. No Cow is stronger for high protein and low sugar. ALOHA is stronger for fiber, organic positioning, and avoiding sugar alcohol sweeteners.
Are protein bars better than protein shakes?
Neither is automatically better. Bars are portable and often feel more satisfying because you chew them. Shakes can deliver protein with fewer calories depending on the formula. Choose based on hunger, convenience, digestion, and whether you need a snack or a supplement.
Should I eat a protein bar before or after a workout?
Either can work. Before workouts, choose a bar that sits well in your stomach. After workouts, prioritize protein. If the workout is long or intense, some carbohydrates may also be useful.
Which protein bar keeps you full the longest?
Bars with both protein and fiber tend to be more filling. Quest stands out in this ranking because it combines 21g protein and 14g fiber in a moderate-calorie bar. Source: CalorieKing