Protein-Packed Peanut Butter Brownies Recipe
If you’re on the hunt for a sweet treat that doesn’t leave you sluggish, these Protein-Packed Peanut Butter Brownies are about to be your new obsession. Imagine biting into a rich, fudgy brownie that delivers the chocolatey satisfaction you crave, while sneaking in a powerhouse punch of protein to keep you fueled and energized. These brownies come together with pantry staples, bake up quickly, and taste so decadent you’ll never believe they’re actually good for you!

Ingredients You’ll Need
The beauty of this recipe is its straightforward list of ingredients; each one plays a special role in creating that perfect balance of gooey texture, irresistible flavor, and optimal nutrition. Grab your favorites for a batch of Protein-Packed Peanut Butter Brownies that feels both wholesome and indulgent.
- Creamy peanut butter: Gives the brownies their signature nutty richness and helps lock in moisture.
- Honey or maple syrup: Natural sweetness with a hint of depth—choose based on your flavor mood!
- Coconut oil, melted: Adds a subtle tropical note and keeps every bite tender.
- Large eggs: Bring structure and binding so your brownies don’t crumble apart.
- Vanilla extract: Rounds out the chocolate and peanut butter flavors with a cozy aroma.
- Chocolate protein powder: The all-star ingredient that gives these brownies their protein punch (vanilla works, too, for a sweeter note).
- Unsweetened cocoa powder: Intensifies the chocolate flavor without extra sugar.
- Salt: Just a pinch heightens every other taste and balances the sweetness.
- Baking soda: Lifts the brownies just enough for a light, chewy texture.
- Dark chocolate chips or chunks (optional): Melty pools of chocolate make these treats extra special—highly recommended!
How to Make Protein-Packed Peanut Butter Brownies
Step 1: Prep the Pan and Preheat Your Oven
Start by preheating your oven to 350°F (175°C). Grab an 8×8-inch baking pan, line it with parchment paper, and give it a quick spray or rub of oil if you like insurance against sticking. This makes it super easy to lift the brownies out and keeps clean-up a breeze.
Step 2: Whisk the Wet Ingredients
In a medium bowl, whisk together the creamy peanut butter, honey or maple syrup, melted coconut oil, eggs, and vanilla extract. You’ll want the mixture to be silky smooth—this is the base that gives Protein-Packed Peanut Butter Brownies their signature fudgy texture and rich peanut butter undertones.
Step 3: Add the Dry Ingredients
Now, sprinkle the chocolate (or vanilla) protein powder, unsweetened cocoa powder, salt, and baking soda right into your wet mix. Stir just until everything is combined into a thick batter. It should look glossy and deeply chocolatey. Overmixing can lead to tough brownies, so stop as soon as no dry streaks remain.
Step 4: Fold In Chocolate Chips
If you adore little bites of melty chocolate, don’t skip this step! Gently fold in the dark chocolate chips or chunks. They’ll add extra decadence and visual appeal to every square of Protein-Packed Peanut Butter Brownies.
Step 5: Spread and Bake
Pour the batter into your prepared pan and use a spatula to spread it evenly to the corners. The batter will be quite thick, so don’t worry if it doesn’t look perfectly smooth on top—it settles as it bakes. Slide the pan into the oven and bake for 18–22 minutes. You’ll know they’re ready when the edges are set but the center still looks slightly underbaked; that’s the secret to ultra-fudgy results!
Step 6: Cool and Slice
Patience pays off here! Let your brownies cool completely in the pan before pulling them out and slicing into nine generous squares. This helps them set up properly so every piece is dense, chewy, and easy to handle.
How to Serve Protein-Packed Peanut Butter Brownies

Garnishes
To take your Protein-Packed Peanut Butter Brownies to the next level, try sprinkling them with flaky sea salt, a drizzle of melted peanut butter, or a dusting of cocoa powder. If you’re feeling fancy, a handful of chopped roasted peanuts gives a lovely crunch and visual pop!
Side Dishes
For an after-workout snack, serve these brownies with a side of Greek yogurt or a cold glass of almond milk. If they’re destined for dessert, pair with a scoop of vanilla ice cream or a handful of fresh raspberries for a bright and creamy contrast.
Creative Ways to Present
Stack the brownies on a vintage cake stand for a rustic touch, or cut them into mini squares and skewer with fresh fruit for a fun party platter. For extra flair, you can even swirl more peanut butter into the top before baking for a marbled effect—Protein-Packed Peanut Butter Brownies always look impressive with minimal effort!
Make Ahead and Storage
Storing Leftovers
These brownies stay moist and delicious for days! Once cooled, store them in an airtight container at room temperature for up to three days. If your kitchen runs warm, pop them in the fridge to keep them fudgy and fresh even longer.
Freezing
Protein-Packed Peanut Butter Brownies freeze beautifully. Wrap them individually in plastic wrap or parchment, then drop into a freezer bag or airtight container. They’ll keep their flavor and texture for up to two months, so you can always have a stash ready for your next chocolate craving.
Reheating
If you love your brownies warm and gooey, give them a quick zap in the microwave for about 10–15 seconds—just enough to get those chocolate chips melty again. Straight from the fridge or freezer? Let them come to room temperature or reheat gently for the perfect treat.
FAQs
Can I use a different nut butter instead of peanut butter?
Absolutely! Try almond or cashew butter for a twist on flavor. Just make sure it’s creamy and unsweetened for best results in your Protein-Packed Peanut Butter Brownies.
What kind of protein powder works best?
Both chocolate and vanilla protein powders are delicious, but chocolate will give a richer, more pronounced cocoa taste. Use a high-quality, finely-milled whey or plant-based protein for the smoothest brownies.
Are these brownies gluten-free?
Yes—no flour here! As long as your protein powder is gluten-free, these Protein-Packed Peanut Butter Brownies are perfect for anyone avoiding gluten.
Can I make this recipe vegan?
With a few tweaks! Swap the eggs for flax eggs, choose maple syrup instead of honey, and use a plant-based protein powder. The texture may be a little softer, but they’ll still be delicious.
Why do my brownies look underbaked in the center?
That’s how you want them! Pulling them out when slightly underdone in the middle is key to getting that signature fudgy bite. They’ll set up as they cool, promise.
Final Thoughts
If you’ve been searching for a dessert that’s both satisfying and secretly nourishing, look no further than Protein-Packed Peanut Butter Brownies. They’re quick to make, wildly versatile, and beloved by anyone who tastes them. Give them a spot in your baking rotation—you’ll be amazed at just how good healthy can taste!
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Protein-Packed Peanut Butter Brownies Recipe
- Total Time: 30 minutes
- Yield: 9 brownies 1x
- Diet: Vegetarian
Description
Indulge in these delicious Protein-Packed Peanut Butter Brownies that are not only rich in flavor but also provide a boost of protein. Perfect for a guilt-free dessert or snack.
Ingredients
Wet Ingredients:
- ½ cup creamy peanut butter
- ⅓ cup honey or maple syrup
- 2 tablespoons coconut oil, melted
- 2 large eggs
- 1 teaspoon vanilla extract
Dry Ingredients:
- ½ cup chocolate protein powder
- ¼ cup unsweetened cocoa powder
- ¼ teaspoon salt
- ¼ teaspoon baking soda
- ¼ cup dark chocolate chips or chunks (optional)
Instructions
- Preheat oven: Preheat oven to 350°F (175°C) and line an 8×8-inch baking pan with parchment paper.
- Mix wet ingredients: In a medium bowl, whisk together peanut butter, honey (or maple syrup), melted coconut oil, eggs, and vanilla extract until smooth.
- Add dry ingredients: Add protein powder, cocoa powder, salt, and baking soda. Stir until just combined into a thick batter.
- Stir in chocolate: Fold in chocolate chips if using.
- Bake: Spread the batter evenly into the prepared pan and smooth the top. Bake for 18–22 minutes or until the edges are set and the center looks just slightly underbaked.
- Cool and slice: Allow to cool completely in the pan before slicing into squares.
Notes
- Use chocolate or vanilla protein powder based on flavor preference.
- For extra texture, sprinkle chopped nuts or swirl in more peanut butter before baking.
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie
- Calories: 210
- Sugar: 10g
- Sodium: 120mg
- Fat: 13g
- Saturated Fat: 4g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 14g
- Fiber: 2g
- Protein: 10g
- Cholesterol: 35mg