Peanut Butter Chocolate Chunk
See full review & buy optionsProtein Bars for Muscle Gain: side-by-side comparison
| Rank | Product | Protein | Calories | Protein / 100 cal | Sugar | Rating |
|---|---|---|---|---|---|---|
| #1 | David Peanut Butter Chocolate Chunk | 28g | 150 | 18.7g | 0g | 4.2 (2,056) |
| #2 | MET-RX BIG 100 Blueberry Cobbler Meal Replacement Bar | 30g | 400 | 7.5g | 24g | 4.1 (423) |
| #3 | David Chocolate Chip Cookie Dough | 28g | 150 | 18.7g | 0g | 4.2 (1,597) |
| #4 | David Blueberry Pie | 28g | 150 | 18.7g | 0g | 4.2 (1,088) |
| #5 | David Salted Peanut Butter | 28g | 150 | 18.7g | — | 4.0 (1,078) |
| #6 | Quest Nutrition Cookies & Cream Protein Bars | 21g | 190 | 11.1g | — | 4.5 (12,622) |
| #7 | No Cow Protein Bar - Peanut Butter Chocolate Chip | 22g | 210 | 10.5g | 1g | 4.3 (2,284) |
| #8 | Pure Protein Pure Protein Chocolate Peanut Butter | 20g | 200 | 10g | 6g | 4.5 (22,819) |
| #9 | Pure Protein Chocolate Peanut Butter Protein Bar | 20g | 200 | 10g | 2g | 4.5 (22,819) |
| #10 | Gatorade Whey Protein Bar - Chocolate Chip | 20g | 360 | 5.6g | 28g | 4.6 (7,847) |
Top 10 Protein Bars for Muscle Gain
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#10Why each pick made the list
#1. David Peanut Butter Chocolate Chunk
David Peanut Butter Chocolate Chunk delivers 28g of protein at 150 calories (per 1 carton – 12 bars) — 18.7g of protein per 100 calories. The label shows 0g sugar, 0g fiber. Peanut Butter Chocolate Chunk. Amazon shoppers rate it 4.2/5 across 2,056 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#2. MET-RX BIG 100 Blueberry Cobbler Meal Replacement Bar
MET-RX BIG 100 Blueberry Cobbler Meal Replacement Bar delivers 30g of protein at 400 calories (per 100g) — 7.5g of protein per 100 calories. The label shows 24g sugar, 1g fiber, 0.38mg sodium. BIG 100 Blueberry Cobbler Meal Replacement Bar. Amazon shoppers rate it 4.1/5 across 423 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#3. David Chocolate Chip Cookie Dough
David Chocolate Chip Cookie Dough delivers 28g of protein at 150 calories (per 1 bar (60g)) — 18.7g of protein per 100 calories. The label shows 0g sugar, 0g fiber. Chocolate Chip Cookie Dough. Amazon shoppers rate it 4.2/5 across 1,597 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#4. David Blueberry Pie
David Blueberry Pie delivers 28g of protein at 150 calories (per 1 bar (60g)) — 18.7g of protein per 100 calories. The label shows 0g sugar, 0g fiber. Blueberry Pie. Amazon shoppers rate it 4.2/5 across 1,088 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#5. David Salted Peanut Butter
David Salted Peanut Butter delivers 28g of protein at 150 calories (per 1 bar (60g)) — 18.7g of protein per 100 calories. Salted Peanut Butter. Amazon shoppers rate it 4.0/5 across 1,078 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#6. Quest Nutrition Cookies & Cream Protein Bars
Quest Nutrition Cookies & Cream Protein Bars delivers 21g of protein at 190 calories (per 1 bar (60g)) — 11.1g of protein per 100 calories. Cookies & Cream Protein Bars. Amazon shoppers rate it 4.5/5 across 12,622 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#7. No Cow Protein Bar - Peanut Butter Chocolate Chip
No Cow Protein Bar - Peanut Butter Chocolate Chip delivers 22g of protein at 210 calories (per 1 bar (60g)) — 10.5g of protein per 100 calories. The label shows 1g sugar, 18g fiber. Vegan protein bar with 22g plant protein and no dairy. Amazon shoppers rate it 4.3/5 across 2,284 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#8. Pure Protein Pure Protein Chocolate Peanut Butter
Pure Protein Pure Protein Chocolate Peanut Butter delivers 20g of protein at 200 calories (per 1 bar (50 g)) — 10g of protein per 100 calories. The label shows 6g sugar, 1g fiber, 0.2mg sodium. Pure Protein Chocolate Peanut Butter. Amazon shoppers rate it 4.5/5 across 22,819 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#9. Pure Protein Chocolate Peanut Butter Protein Bar
Pure Protein Chocolate Peanut Butter Protein Bar delivers 20g of protein at 200 calories (per 1 bar (50g)) — 10g of protein per 100 calories. The label shows 2g sugar, 1g fiber. High-protein bar with 20g protein and rich chocolate peanut butter flavor. Amazon shoppers rate it 4.5/5 across 22,819 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy options#10. Gatorade Whey Protein Bar - Chocolate Chip
Gatorade Whey Protein Bar - Chocolate Chip delivers 20g of protein at 360 calories (per 1 bar (80g)) — 5.6g of protein per 100 calories. The label shows 28g sugar, 4g fiber. Sports protein bar with 20g protein for athlete recovery. Amazon shoppers rate it 4.6/5 across 7,847 ratings. It clears the muscle gain bar of at least 20g protein per serving.
Full nutrition panel & buy optionsRankings combine objective product data (protein per serving, calories, carbs, sugar), customer signal (rating × review count), and value (protein per 100 calories). Products that don't meet the muscle gain criteria — ≥20g protein, Supports 1g/lb bodyweight goal, Recovery-friendly macros — are excluded before ranking. Average protein across our top picks: 25g per serving. Read the full scoring breakdown on our methodology page.
This page is editorial guidance, not medical advice. Links to Amazon and other retailers may be affiliate links — you pay the same price, we earn a small commission on qualifying purchases.
What makes a protein bars good for muscle gain?
For muscle gain, we prioritize: ≥20g protein; Supports 1g/lb bodyweight goal; Recovery-friendly macros. The picks on this page were ranked against those criteria using real nutrition data from 98 qualifying products in our catalog.
What is the best protein bars for muscle gain?
Our top pick is David Peanut Butter Chocolate Chunk — 28g protein, 150 calories per serving, rated 4.2/5 by 2056 Amazon shoppers. It best matches the muscle gain criteria of ≥20g protein and Supports 1g/lb bodyweight goal.
Which protein bar has the most protein?
Among our top picks, MET-RX BIG 100 Blueberry Cobbler Meal Replacement Bar has the most protein at 30g per serving (400 calories).
How much protein should I expect per serving?
Across our top 10 picks, average protein is 25g per serving, with the highest-protein option delivering 30g. Individual product pages show full nutrition panels.
Is this medical or dietary advice?
No — these rankings are informational. For personalized dietary guidance, especially around health conditions, pregnancy, or clinical goals, consult a registered dietitian or your clinician.
Where can I buy these?
Each product card links to its detail page with direct buy links to Amazon and other retailers. We use affiliate links (FTC disclosure at the bottom of every page) — you pay the same price; we earn a small commission on qualifying purchases.
- NASEM Dietary Reference Intakes — Protein — Institute of Medicine DRI for protein (RDA, AMDR)
- USDA FoodData Central — Baseline macronutrient database for generic foods
- NIH Office of Dietary Supplements — Dietary Protein — Federal guidance on protein, supplements, and weight management
- ISSN Position Stand: Protein and Exercise — Peer-reviewed consensus on protein intake for athletes (1.4–2.0 g/kg)
Nutrition data is verified against the product’s Nutrition Facts label and the brand’s official spec sheet. See our full ranking methodology for the scoring formula and inclusion rules.
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