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Optimum Nutrition Marshmallow Crunch Bar vs Optimum Nutrition Chocolate Brownie Bar

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Optimum Nutrition Marshmallow Crunch Bar and Optimum Nutrition Chocolate Brownie Bar.

Last verified: 18 Feb 2026 · Based on 8 reviews

80.0
Score Summary

Optimum Nutrition Marshmallow Crunch Bar scores 80.0/100 vs Optimum Nutrition Chocolate Brownie Bar at 70.0/100. Optimum Nutrition Marshmallow Crunch Bar wins on value for money. Optimum Nutrition Chocolate Brownie Bar is stronger on certifications.

How Do the Scores Compare?

Marshmallow Crunch Protein Bar 65g
Chocolate Brownie Crunch Pr...
Marshmallow Crunch Protein Bar 65g
Marshmallow Crunch Protein Bar 65g
Optimum Nutrition
Chocolate Brownie Crunch Protein Bar 10x 65g
Chocolate Brownie Crunch Pr...
Optimum Nutrition
Overall Score 80.0 70.0
Effectiveness 80.0/100
Best
80.0/100
Best
Ingredient Quality 70.0/100
Best
70.0/100
Best
Value for Money 80.0/100
Best
70.0/100
Side Effects 80.0/100
Best
80.0/100
Best
Certifications 30.0/100 40.0/100
Best
Best Price £2.20 Amazon UK →
Cheapest
£24.00 Holland & Barrett →
Form Bar None
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 4 4

Marshmallow Crunch Protein Bar 65g

Pros

  • Excellent taste and texture - all reviewers specifically commended flavor profile
  • High protein content (20g) with no added sugar, supporting muscle support goals
  • Competitively priced compared to other premium protein bar brands
  • Vegetarian-friendly formula

Cons

  • Contains multiple major allergens (gluten, milk, eggs, nuts, soy, peanuts) - unsuitable for those with allergies or severe intolerances
  • Not third-party tested - no independent verification of nutrient claims or purity
  • Not vegan - contains animal-derived ingredients, limiting accessibility
  • Contains naturally occurring sugars despite 'no added sugar' marketing - total sugar content not disclosed in reviews

Best For

Gym enthusiasts and athletes seeking post-workout snacks People wanting high-protein convenience foods with good taste Those following low-added-sugar diets Vegetarians
View full review →

Chocolate Brownie Crunch Protein...

Pros

  • Excellent taste and texture - all reviews highlight delicious chocolate and crunchy crispy layers
  • High protein content (20g per bar) supports muscle recovery and satiety
  • No added sugar formulation suits low-sugar diet preferences
  • Vegetarian-friendly option from a reputable established brand

Cons

  • Contains naturally occurring sugars despite 'no added sugar' claim - may not suit strict keto dieters
  • No third-party testing certification limits independent verification of label claims
  • Likely contains artificial sweeteners to achieve zero added sugar without excessive calories
  • Limited review base (4 reviews) - potential for selection bias toward satisfied customers

Best For

Gym-goers and athletes seeking convenient high-protein snacks People on low-added-sugar diets Vegetarians needing protein supplementation Users prioritizing taste and satisfaction in protein bars
View full review →

Score Breakdown: Optimum Nutrition Marshmallow Crunch Bar vs Optimum Nutrition Chocolate Brownie Bar

Optimum Nutrition Marshmallow Crunch Bar Winner 80.0/100

Optimum Nutrition's Marshmallow Crunch Protein Bar is a 20g protein bar with white chocolate and marshmallow flavour, receiving unanimous 5-star ratings from all 4 Holland & Barrett reviewers.

Effectiveness
Marshmallow Crun..
80.0/100
Chocolate Browni..
80.0/100
Ingredient Quality
Marshmallow Crun..
70.0/100
Chocolate Browni..
70.0/100
Value for Money
Marshmallow Crun..
80.0/100
Chocolate Browni..
70.0/100
Side Effects
Marshmallow Crun..
80.0/100
Chocolate Browni..
80.0/100
Certifications
Marshmallow Crun..
30.0/100
Chocolate Browni..
40.0/100

What are the key differences?

Optimum Nutrition Marshmallow Crunch Bar is best for: Gym enthusiasts and athletes seeking post-workout snacks, People wanting high-protein convenience foods with good taste
Optimum Nutrition Chocolate Brownie Bar is best for: Gym-goers and athletes seeking convenient high-protein snacks, People on low-added-sugar diets

Frequently Asked Questions

Which is better, Optimum Nutrition Marshmallow Crunch Bar or Optimum Nutrition Chocolate Brownie Bar?
Optimum Nutrition Marshmallow Crunch Bar scores 80.0/100 overall while Optimum Nutrition Chocolate Brownie Bar scores 70.0/100. Optimum Nutrition Marshmallow Crunch Bar comes out ahead, scoring higher on effectiveness (80.0 vs 80.0). Optimum Nutrition Marshmallow Crunch Bar is best suited for Gym enthusiasts and athletes seeking post-workout snacks and People wanting high-protein convenience foods with good taste. Optimum Nutrition Chocolate Brownie Bar is better for Gym-goers and athletes seeking convenient high-protein snacks and People on low-added-sugar diets.
Is Optimum Nutrition Marshmallow Crunch Bar worth the price compared to Optimum Nutrition Chocolate Brownie Bar?
Optimum Nutrition Marshmallow Crunch Bar costs £2.20 while Optimum Nutrition Chocolate Brownie Bar is £24.00. For value, Optimum Nutrition Marshmallow Crunch Bar scores 80.0/100 vs Optimum Nutrition Chocolate Brownie Bar's 70.0/100. Optimum Nutrition Marshmallow Crunch Bar delivers better value relative to its quality.
Which has fewer side effects?
Optimum Nutrition Marshmallow Crunch Bar scores 80.0/100 for side effects (higher means fewer reported issues) while Optimum Nutrition Chocolate Brownie Bar scores 80.0/100. Both have similar side effect profiles based on user reviews. For certification and testing, Optimum Nutrition Marshmallow Crunch Bar scores 30.0/100 vs Optimum Nutrition Chocolate Brownie Bar's 40.0/100. Always consult a healthcare professional before starting any supplement.

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