round white ceramic plate filled with waffle

How to Make Easy & Delicious Peanut Butter Protein Brownies

Try these Batch-Baked Peanut Butter Protein Brownies for a delicious, guilt-free treat packed with protein. Perfect for meal prep and easy to make!

DESSERT

Mae Ellison

3/25/20253 min read

Fudgy brownies with chocolate chips and banana pieces.
Fudgy brownies with chocolate chips and banana pieces.

Batch-Baked Peanut Butter Protein Brownies

A High-Protein Dessert for Easy Meal Prep

Savor a Tasty Treat with a Nutritional Twist

We’ve all experienced it—the urge for something sweet, but the guilt that follows. What if you could enjoy dessert while nourishing your body with high-quality protein?

These Batch-Baked Peanut Butter Protein Brownies are the perfect solution, offering a delicious balance of flavor and nutrition. Not only do they satisfy your cravings, but they’re also packed with nutrients to keep you energized throughout the day.

Why This Recipe Is a Game Changer

If you’re looking to boost your protein intake without sacrificing taste, this recipe is made for you. It’s:

  • Simple to prepare

  • Requires only 10 minutes of active prep

  • Ideal for meal prep

  • Perfect for guilt-free snacking

Whether you're baking for yourself or for others, these brownies are a reliable, versatile treat.

Time Required

  • Prep Time: 10 minutes

  • Cook Time: 20 minutes

  • Total Time: 30 minutes

  • Difficulty: Easy

With just a few ingredients and minimal effort, you’ll have a tray of brownies ready to enjoy, store, or gift.

Key Ingredients

What Makes These Brownies Stand Out?

Each ingredient is chosen to create the perfect mix of rich taste, nutritional value, and simple preparation.

For one batch (about 6–8 servings):

  • 3 ripe bananas – Add natural sweetness and moisture

  • ½ cup creamy peanut butter – Healthy fats and protein boost

  • 2 tablespoons maple syrup – Natural sweetener for balanced flavor

  • ¼ cup cocoa powder – Rich in antioxidants and deep chocolate flavor

  • 2 scoops unflavored protein powder – Extra protein without added taste

  • 1 teaspoon vanilla extract – Smooth, aromatic depth

Optional Toppings:
Crushed peanuts, dark chocolate chips, or a sprinkle of sea salt for extra texture and flavor.

Substitutions and Variations

Customize Based on Your Pantry and Taste

  • Banana Alternative: Use applesauce for the same moist consistency

  • Nut Butter Swap: Try almond or cashew butter for a different nutty twist

  • Sweetener Options: Honey or agave nectar work just as well as maple syrup

These flexible options make it easy to adapt the recipe to your dietary needs or available ingredients.

Step-by-Step Instructions

Making Your Protein Brownies

1. Preheat the Oven
Preheat to 350°F (175°C) and grease or line an 8x6-inch baking pan.

2. Mash the Bananas
In a bowl, mash the bananas until smooth.

3. Mix Wet Ingredients
Add peanut butter, maple syrup, and vanilla. Stir until fully combined and smooth.

4. Add Dry Ingredients
Sift in cocoa powder and protein powder. Gently fold until the batter is thick and smooth. Avoid overmixing.

5. Pour the Batter
Transfer the mixture into the prepared pan and spread it evenly with a spatula.

6. Bake
Bake for 18–20 minutes. Insert a toothpick into the center—if it comes out clean, they’re ready.

7. Cool Before Cutting
Let them cool completely in the pan before slicing. This helps set the texture for perfect pieces.

Storing and Make-Ahead Tips

Keep Them Fresh

  • Room Temperature: Store in an airtight container for up to 3 days.

  • Refrigerator: Keeps them fresh for up to a week.

  • Freezer: Wrap individual pieces and freeze in a bag for up to 3 months.


To Reheat: Microwave for 10–15 seconds or let thaw at room temperature. Perfect for grab-and-go snacks or post-workout fuel.

Recipe Variations

Add Your Own Twist

  • Black Bean Brownies: Blend cooked black beans with wet ingredients for added fiber and moisture.

  • Flourless Option: Add almond flour or oats for a denser, gluten-free option.

  • Single-Serve Version: Halve the recipe and bake in a ramekin for a quick treat.


Get creative and enjoy new textures and tastes while sticking to your high-protein goals.

Conclusion

A Guilt-Free Dessert You’ll Love

These Batch-Baked Peanut Butter Protein Brownies prove you don’t have to choose between health and indulgence. Packed with protein, easy to prepare, and endlessly customizable, they’re sure to become a staple in your kitchen.

So grab those ingredients and start baking—your body and taste buds will thank you!

FAQs

All Your Questions Answered

Q: Are these brownies suitable for vegans?
A: Yes! Use a plant-based protein powder and a vegan-friendly sweetener.

Q: Can I use flavored protein powder?
A: Absolutely! Chocolate or vanilla work well, but unflavored keeps the original taste.

Q: How much protein is in each brownie?
A: On average, 8–10 grams per serving, depending on your protein powder.

Q: Can I reduce the sweetness?
A: Definitely. Adjust or omit the maple syrup based on your taste.

Making peanut butter protein brownies, from mixing to baking and storing.
Making peanut butter protein brownies, from mixing to baking and storing.