Peanut Butter Stuffed Brownies Recipe
If you are craving a dessert that perfectly combines the rich, fudgy decadence of chocolate brownies with a luscious, creamy peanut butter surprise inside, then you absolutely need to try this Peanut Butter Stuffed Brownies Recipe. These brownies are an irresistible treat where every bite reveals a heavenly swirl of peanut butter tucked right in the middle, balancing the deep cocoa flavors with just the right touch of nutty sweetness. Whether you’re baking for a special occasion or simply want to spoil yourself and friends, this recipe is a guaranteed way to bring smiles and satisfy those dessert cravings with an easy-to-follow approach and incredible results.

Ingredients You’ll Need
The magic of these Peanut Butter Stuffed Brownies Recipe lies in a handful of simple, yet essential ingredients that each bring their own delicious character to the final dessert. You’ll be using pantry staples you probably already have, and each adds to the moistness, richness, and that perfect fudgy texture you’re after.
- 3/4 cup smooth peanut butter: Use creamy peanut butter (not natural) for a smooth, sweet filling that holds together beautifully.
- 1 cup powdered sugar (110 grams): Also known as icing sugar; it sweetens and thickens the peanut butter filling for a dreamy texture.
- 1 teaspoon vanilla extract: Infuses a subtle warmth to both peanut butter filling and brownie batter.
- 1/2 cup all-purpose flour (63 grams): Gives structure and a tender crumb to the brownies.
- 1/4 cup cocoa powder (22 grams): For that rich chocolate flavor that’s full and deep.
- 1/4 teaspoon salt: Enhances the chocolate and peanut flavors by balancing sweetness.
- 1/2 cup unsalted butter (112 grams): Provides the buttery richness necessary for fudgy brownies.
- 6 ounces semi-sweet chocolate (180 grams): Or your favorite 50-60% dark chocolate for melt-in-your-mouth intensity.
- 1 cup granulated sugar (200 grams): Sweetens the batter and helps create a nice crust on top.
- 2 large eggs + 1 large egg yolk: Adds moisture, richness, and helps the brownies bind perfectly.
How to Make Peanut Butter Stuffed Brownies Recipe
Step 1: Prepare Your Pan and Peanut Butter Filling
Preheat the oven to 350°F (180°C) and line an 8×8 inch pan with parchment paper, ensuring there’s an overhang to make lifting the brownies easier later. Lightly greasing the pan before placing the parchment helps it stick nicely. Meanwhile, in a medium bowl, beat together the smooth peanut butter, powdered sugar, and salt until fully combined and creamy. Pop this peanut butter filling into the fridge while you work on the brownie batter—it will firm up just right for layering.
Step 2: Mix the Dry Ingredients
In a small bowl, whisk together the flour, cocoa powder, and salt. Sifting the cocoa and flour can help avoid lumps and make the batter silky smooth, but it’s not absolutely necessary. This step is crucial as these dry ingredients provide structure and that classic chocolaty punch to the brownies.
Step 3: Create the Chocolate Butter Mixture
Chop your semi-sweet chocolate into small pieces for even melting. In a large bowl, melt the butter and chocolate together either in the microwave using 45-second intervals on medium power or in a double boiler over gently simmering water. Stir between intervals until smooth. Let it cool for about five minutes so you don’t scramble the eggs when you add them next.
Step 4: Combine Sugar, Eggs, and Vanilla
Whisk the granulated sugar into the cooled chocolate butter mixture, followed by the 2 whole eggs, the additional egg yolk, and the vanilla extract. Mix everything until your batter looks glossy and velvety without any streaks of egg showing. This helps create that luscious texture that brownies are famous for.
Step 5: Incorporate the Dry Ingredients
Add the flour, cocoa, and salt mixture into the wet ingredients. Stir gently until the batter is smooth and uniform, without overmixing. This ensures that your brownies stay tender and fudgy rather than cakey.
Step 6: Assemble the Brownies with Peanut Butter Filling
Take half of the brownie batter and spread it into an even layer in your prepared pan. Scoop the peanut butter filling from the fridge in tablespoons, flatten each slightly, and arrange them evenly over the batter—don’t worry if the peanut butter layer isn’t perfect or doesn’t cover all the brownie layer, this rustic look adds to the homemade charm. Now, carefully spoon the remaining brownie batter over the peanut butter layer. Rather than pouring it all at once, spoon it gently so you don’t disturb the peanut butter layer underneath. Spread the top layer into an even surface.
Step 7: Bake and Cool
Pop your masterpiece into the oven and bake for about 32 to 37 minutes until the top looks set and a toothpick inserted in the middle comes out clean or with just a few moist crumbs. Avoid overbaking to keep that perfect fudgy center. Once out, allow the brownies to cool completely in the pan until it’s no longer warm to the touch—this cooling step lets the peanut butter layer firm up and the flavors meld together beautifully. To speed things up, you can chill the brownies in the fridge on a wire rack before slicing.
How to Serve Peanut Butter Stuffed Brownies Recipe

Garnishes
For a little extra flair, sprinkle a pinch of flaky sea salt or a dusting of powdered sugar over the brownies just before serving. Chopped peanuts or a drizzle of melted chocolate can also enhance texture and presentation, making your Peanut Butter Stuffed Brownies Recipe feel even more special and indulgent.
Side Dishes
Pair your brownies with a scoop of vanilla ice cream for a classic combo, or offer a dollop of whipped cream to add a light, airy contrast to the dense chocolate and peanut butter layers. Fresh berries or a tangy raspberry sauce can provide a vibrant, fruity counterbalance to the rich dessert.
Creative Ways to Present
Slice your brownies into neat squares or rustic triangles and serve on a wooden board for a casual vibe. For parties, consider individual mini brownie cups filled with the peanut butter core visible on top. Alternatively, serve the brownies warm with a side of espresso or milk for a cozy afternoon treat that’s unforgettable.
Make Ahead and Storage
Storing Leftovers
Once completely cooled, store your Peanut Butter Stuffed Brownies in an airtight container at room temperature for up to three days. This keeps them moist and fudgy. If your kitchen is warm, storing them in the fridge will add a firmer texture and extend freshness to about a week.
Freezing
You can freeze these delicious brownies for longer storage. Wrap each slice individually in plastic wrap and place them in a freezer-safe container or bag. They hold up well for up to three months. When you’re ready to indulge, just thaw at room temperature or gently warm before serving.
Reheating
For the perfect warm brownie experience after storage, microwave a piece for about 15 seconds or warm in a preheated oven at 300°F (150°C) for 5 to 7 minutes. This will soften the chocolate and peanut butter filling, bringing back that just-baked magic.
FAQs
Can I use natural peanut butter instead of smooth peanut butter?
While natural peanut butter can be used, it tends to be oilier and less sweet, which may affect the texture and sweetness of the peanut butter filling. For best results, use smooth peanut butter that is already sweetened and creamy to achieve that perfect consistency.
What type of chocolate works best for these brownies?
Semi-sweet chocolate or dark chocolate with 50-60% cocoa is ideal. It creates a rich, deep chocolate flavor that pairs beautifully with the peanut butter. Milk chocolate can make the brownies too sweet, while very dark chocolate might be too bitter for some tastes.
Can I make the peanut butter filling ahead of time?
Absolutely! The peanut butter filling can be prepared up to a day in advance and kept refrigerated in an airtight container. This actually helps the filling firm up and makes it easier to layer between the brownie batter when assembling.
How do I know when the brownies are done baking?
Look for a set top that’s no longer shiny or jiggly and test with a toothpick inserted near the center. It should come out clean or with a few moist crumbs, but not wet batter. This ensures fudgy brownies without soggy centers.
Can I substitute butter with oil in this recipe?
Butter adds flavor and richness that oil cannot quite replicate in this recipe. While oil can be used in brownies, it will change the texture and taste, making them less fudgy and buttery. For the best Peanut Butter Stuffed Brownies Recipe, stick with unsalted butter as called for.
Final Thoughts
This Peanut Butter Stuffed Brownies Recipe is a wholehearted celebration of two classic flavors wrapped together in one irresistible dessert. It’s simple enough for a weeknight bake yet impressive enough for any occasion, and the result is a perfect balance of fudgy chocolate and creamy peanut butter delight. Next time you want to share something truly special, don’t hesitate—grab your ingredients and get ready to bake a batch that will have everyone asking for more!
PrintPeanut Butter Stuffed Brownies Recipe
These Peanut Butter Stuffed Brownies combine rich, fudgy chocolate brownie layers with a luscious, creamy peanut butter filling for an irresistible treat. With a perfect balance of sweet chocolate and salty peanut butter, these brownies are an indulgent dessert that is simple to prepare and perfect for sharing.
- Prep Time: 20 minutes
- Cook Time: 37 minutes
- Total Time: 1 hour 5 minutes
- Yield: 12 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Peanut Butter Filling
- 3/4 cup smooth peanut butter (not natural)
- 1 cup powdered sugar (110 grams)
- 1/4 teaspoon salt
Brownie Batter
- 1/2 cup all-purpose flour (63 grams)
- 1/4 cup cocoa powder (22 grams)
- 1/4 teaspoon salt
- 1/2 cup unsalted butter (112 grams)
- 6 ounces semi-sweet chocolate (180 grams) (or 50-60% dark chocolate)
- 1 cup granulated sugar (200 grams)
- 2 large eggs
- 1 large egg yolk
- 1 teaspoon vanilla extract
Instructions
- Preheat Oven and Prepare Pan: Preheat the oven to 350°F (180°C) and line an 8×8 inch (20×20 cm) pan with parchment paper, leaving an overhang on the edges. Lightly grease the pan first to help the parchment paper stick.
- Prepare Peanut Butter Filling: In a medium bowl, beat together peanut butter, powdered sugar, and salt until smooth and combined. If the powdered sugar is lumpy, sift it beforehand. Place the filling in the refrigerator while preparing the brownie batter to chill and firm up.
- Mix Dry Ingredients for Brownie Batter: In a small bowl, whisk together flour, cocoa powder, and salt. Set aside.
- Melt Butter and Chocolate: In a large bowl, melt the butter and chopped chocolate together using the microwave at medium power in 45-second intervals, stirring each time, or melt over a double boiler with gently simmering water.
- Cool and Add Wet Ingredients: Let the melted mixture cool for about 5 minutes. Then whisk in the granulated sugar, 2 eggs, egg yolk, and vanilla extract until glossy and smooth, ensuring no clumps of egg remain.
- Combine Dry and Wet Mixtures: Gradually add the dry ingredients to the chocolate mixture, sifting if needed, and whisk until the batter is smooth and no dry streaks remain.
- Assemble First Brownie Layer: Spread half of the brownie batter evenly into the prepared pan.
- Add Peanut Butter Layer: Remove the peanut butter filling from the fridge, scoop out tablespoons, flatten them slightly, and place to cover the brownie layer as evenly as possible. It’s okay if some areas are not fully covered.
- Top with Remaining Brownie Batter: Spoon the remaining brownie batter gently over the peanut butter layer to avoid disturbing it, then spread evenly to cover fully.
- Bake the Brownies: Bake in the center of the oven for 32 to 37 minutes, or until the top is set and a toothpick inserted comes out clean or with a few moist crumbs but no raw batter.
- Cool and Slice: Allow the brownies to cool completely in the pan until it is no longer warm, which may take several hours. To speed cooling, place the pan on a wire rack in the refrigerator. Use the parchment overhang to lift the brownies out of the pan, place on a cutting board, and slice with a sharp knife.
Notes
- For best texture, ensure the peanut butter filling is chilled before assembling the brownies.
- Use medium power settings when melting chocolate in the microwave to prevent burning.
- Do not pour the remaining brownie batter on top of the peanut butter layer; spoon it on gently to maintain distinct layers.
- Allow the brownies to fully cool before slicing to help the layers set properly.
- Store brownies in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.
Keywords: peanut butter brownies, stuffed brownies, chocolate brownies, peanut butter dessert, fudgy brownies, homemade brownies
