Rich, fudgy, and intensely chocolatey, these High-Protein Brownies are a delicious way to satisfy your sweet tooth while adding an extra boost of protein and collagen to your day. Made with wholesome ingredients like almond flour, coconut sugar, and collagen peptides, these “beauty brownies” are naturally gluten-free and have a wonderfully chewy texture.

A small wooden plate of high-protein brownies topped with pecans.


 

Why are these also called beauty brownies?

Collagen peptides provide protein and are commonly used as part of wellness and beauty routines because collagen is a structural protein found naturally in the body. Combined with antioxidant-rich cocoa and dark chocolate, these brownies offer a delicious way to enjoy ingredients often associated with skin and hair health.

Why you’ll love this recipe:

  • Extra Protein in Every Bite – Collagen peptides add a boost of protein without affecting the flavor or texture.
  • Rich and Fudgy – Dark chocolate chips and cocoa powder create a deep chocolate flavor and moist, brownie-like texture.
  • Naturally Gluten-Free – Almond flour keeps these brownies tender and grain-free.
High-protein brownies cut into squares on parchment paper.

Ingredients you’ll need:

  • Butter – Adds richness and helps create a moist, fudgy texture.
  • Dark chocolate chips – Melted into the batter for an intense chocolate flavor.
  • Collagen peptides – Increase the protein content and dissolve seamlessly into the batter.
  • Eggs – Provide structure and contribute to the chewy texture.
  • Coconut sugar – Adds sweetness and subtle caramel notes.
  • Maple syrup – Keeps the brownies moist and adds natural sweetness.
  • Unsweetened cocoa powder – Enhances the chocolate flavor.
  • Almond flour – Produces soft, tender brownies while keeping them gluten-free.
  • Baking soda – Gives the brownies a slight lift and prevents them from becoming too dense.
  • Chopped pecans or walnuts – For texture and crunch (optional)

How to make high-protein brownies:

(The full written and printable recipe is further below.)

Step #1) In a small saucepan, melt the butter and chocolate chips, stirring them together until smooth. Remove from heat and stir in the collagen peptides.

Step #2) In a medium bowl, whisk the eggs and sugar until well combined. Whisk in the maple syrup, followed by the peptide mixture.

Step #3) Sift in the cocoa powder, almond flour, and baking soda. Mix until just combined.

Step #4) Pour the batter into a parchment paper-lined 8×8″ square pan. Top with more chocolate chips and/or chopped pecans if desired. Bake at 350F for 25 minutes.

🌟 Expert tips:

  • Allow the brownies to cool completely before cutting. They will continue to set as they cool, giving you perfectly fudgy squares.
  • Use high-quality dark chocolate chips for the richest chocolate flavor.
  • Don’t overbake. The center should still look slightly underdone when you remove the pan from the oven.
  • Line the pan with parchment paper so you can easily lift the brownies out for neat slices.
  • Choose unflavored collagen peptides so the chocolate flavor remains the star.
A high-protein brownie broken in half on a wooden plate with a ceramic mug.

Storing & freezing instructions:

Storing – Store the brownies in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to 1 week.

Freezing – Once they have completely cooled, place the brownies in a freezer-safe container with parchment paper between layers to prevent sticking. Freeze for up to 3 months and thaw at room temperature before serving.

Recipe FAQs:

Can I use protein powder instead of collagen peptides?

Yes, but protein powders absorb moisture differently and will produce a drier texture. Collagen peptides dissolve easily and help maintain the brownies’ chewy and fudgy consistency.

Do collagen peptides change the taste?

No. Unflavored collagen peptides are virtually tasteless and blend seamlessly into the batter.

Can I make these brownies dairy-free?

Yes. Substitute the butter with coconut oil and use dairy-free dark chocolate chips.

If you’ve tried this High-Protein Brownie Recipe or any other recipe on my blog, please leave a 🌟 star rating and let me know how it went in the 📝 comments below. Thanks for visiting!

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High-Protein Brownies

Yield: 16
Prep: 15 minutes
Cook: 25 minutes
Total: 40 minutes
Author: Lily Ernst
Course: Dessert, Snack
Method: Bake
Rich, fudgy, and intensely chocolatey, these High-Protein Brownies are a delicious way to satisfy your sweet tooth while adding an extra boost of protein and collagen to your day.
Print Leave a Review Pin Recipe

Ingredients

  • 1/3 cup unsalted butter
  • 2/3 cup dark chocolate chips
  • 3/4 cup collagen peptides
  • 2 large eggs
  • 1/4 cup coconut sugar
  • 1/4 cup maple syrup
  • 1/4 cup unsweetened cocoa powder
  • 1/4 cup almond flour
  • 1/4 tsp baking soda
  • pinch of salt

Optional toppings:

  • 1/2 cup chopped pecans or walnuts
  • 1/4 cup dark chocolate chips

Instructions
 

  • In a small saucepan, melt the butter and chocolate chips until smooth. Remove from heat and stir in the collagen peptides, 1/4 cup at a time. Set aside to cool for 5-10 minutes.
    1/3 cup unsalted butter, 2/3 cup dark chocolate chips, 3/4 cup collagen peptides
  • Meanwhile, preheat the oven to 350F and line an 8×8" square pan with parchment paper.
  • In a medium bowl, whisk the eggs and sugar until well combined. Whisk in the maple syrup, followed by the peptide mixture.
    2 large eggs, 1/4 cup coconut sugar, 1/4 cup maple syrup
  • Sift in the cocoa powder, almond flour, and baking soda. Mix until just combined.
    1/4 cup almond flour, 1/4 cup unsweetened cocoa powder, 1/4 tsp baking soda
  • Pour the batter into the prepared pan. Top with more chocolate chips and/or chopped pecans if desired. Bake for about 25 minutes or until the edges are set and the center is still slightly soft. Let cool completely before cutting and serving.
    1/2 cup chopped pecans or walnuts, 1/4 cup dark chocolate chips

Notes

Leftovers can be stored in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to 1 week.
Calories: 157kcal, Carbohydrates: 11g, Protein: 12g, Fat: 8g, Saturated Fat: 5g, Polyunsaturated Fat: 0.3g, Monounsaturated Fat: 1g, Trans Fat: 0.2g, Cholesterol: 31mg, Sodium: 102mg, Potassium: 88mg, Fiber: 1g, Sugar: 7g, Vitamin A: 149IU, Vitamin C: 0.04mg, Calcium: 38mg, Iron: 0.5mg
Did you make this recipe?Tag @littlesweetbaker on Instagram and hashtag it #littlesweetbaker.

Recipe adapted from Rachel’s Good Eats Cookbook