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Tall stack of gluten free high protein brownies

Gluten-Free High-Protein Brownies (The Ultimate Fudgy Method)

3 from 2 votes
Ultra-fudgy, gluten-free high-protein brownies made without flour, butter, or oil. Greek yogurt and peanut butter provide moisture and richness while a whey/casein protein blend creates structure for a dense, gooey center.
Prep Time 10 minutes
Cook Time 14 minutes
Total Time 24 minutes
Servings: 8 brownies
Course: Dessert
Cuisine: American
Calories: 138

Ingredients
  

Wet Ingredients
  • 1 large egg
  • 1/4 cup plain Greek yogurt
  • 1/4 cup milk dairy or plant-based
  • 1/3 cup honey or 4-5 tbsp brown sugar
  • 3 tbsp peanut butter
Dry Ingredients
  • 1/3 cup cocoa powder
  • 1/4 cup PE Science protein powder vanilla or chocolate
  • 1/2 tsp baking powder
  • salt pinch
Optional Mix-Ins
  • 1/4 cup gluten-free dark chocolate chips

Method
 

  1. Preheat your oven to 170°C (340°F). Lightly grease a small baking pan or line it with parchment paper for easy removal.
    Gluten free high protein brownie ingredients laid out for baking
  2. In a medium mixing bowl, whisk together the egg, Greek yogurt, milk, honey (or brown sugar), and peanut butter until completely smooth.
    Wet ingredients mixed together for gluten free protein brownies
  3. Add the cocoa powder, protein powder, baking powder, and salt to the bowl. Stir until just combined. The batter should be thick and glossy, not runny.
    Dry ingredients added to gluten free protein brownie batter
  4. Gently fold in the chocolate chips, if using.
    Chocolate chips folded into gluten free protein brownie batter
  5. Pour the batter into the prepared pan and smooth the top. Bake for 12–14 minutes, removing when the center is still slightly soft.
    Gluten free protein brownie batter poured into baking pan
  6. Let cool in the pan for 10–15 minutes before slicing into 6–8 brownies. The brownies will continue to set as they cool.
    Freshly baked gluten free high protein brownies in pan

Nutrition

Calories: 138kcalCarbohydrates: 16gProtein: 7gFat: 6gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 2gTrans Fat: 0.003gCholesterol: 30mgSodium: 79mgPotassium: 168mgFiber: 2gSugar: 12gVitamin A: 56IUVitamin C: 0.1mgCalcium: 71mgIron: 1mg

Notes

Texture Control: These brownies are intentionally underbaked slightly. Removing them while the center is soft is critical for a fudgy texture.
Protein Powder Matters: A whey/casein blend is strongly recommended. Whey alone can dry out the brownies, while casein helps retain moisture and structure.
Moisture Balance: Greek yogurt provides acidity and moisture, while peanut butter supplies fat. Removing or reducing either will result in dry brownies.
Pan Size: Use a small pan (6x6 or 8x8). A larger pan will cause the brownies to bake too thin and lose their fudgy center.
Cooling Time: Do not skip cooling. These brownies firm up significantly as they rest and reach peak texture after 10–15 minutes.

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