There’s nothing quite like the comforting blend of chocolate and peanut butter, and these Peanut Butter Stuffed Brownies are sure to delight anyone with a sweet tooth. Imagine biting into a rich, fudgy brownie with a creamy, dreamy peanut butter center—pure bliss! This recipe is a surefire way to win over family and friends, whether it’s a casual weekend treat or a special occasion dessert. Let’s dive into the details of creating this indulgent dessert.
Why You’ll Love This
- Decadent Flavors: The rich chocolate brownie pairs perfectly with the creamy peanut butter filling, creating a symphony of flavors in every bite. The contrast between the intense chocolate and the smooth, nutty peanut butter makes every morsel memorable.
- Easy to Make: With simple, everyday ingredients and straightforward steps, this recipe is accessible to both novice and experienced bakers. Even if you’re new to baking, you’ll find the process smooth and enjoyable. Pro tip: measure your ingredients beforehand to streamline the process and ensure even mixing.
- Perfect for Any Occasion: Whether it’s a family gathering, a potluck, or just a treat-yourself moment, these brownies are always a hit. Their elegant appearance makes them suitable for more formal events as well. Dress them up with a drizzle of chocolate or a sprinkle of powdered sugar for a more sophisticated look.
- Versatile: You can easily customize this recipe by adding nuts, marshmallows, or even a dash of espresso powder for an extra kick. Try swirling in some raspberry jam for a fruity twist or sprinkling sea salt on top for a sweet-salty combo. You can also substitute almond butter or hazelnut spread for the peanut butter to create different flavor profiles.
- Crowd-Pleaser: Peanut butter and chocolate is a classic combination that appeals to kids and adults alike. It’s a universally loved duo that rarely disappoints, making it a safe choice for gatherings with diverse palates.
The Recipe
Peanut Butter Stuffed Brownies Recipe
Ingredients
For the Brownies:
– 8 tablespoons (113 grams) unsalted butter
– 8 ounces (226 grams) semisweet chocolate, chopped
– 3 large eggs, room temperature
– 1 cup (198 grams) granulated sugar
– 1/2 teaspoon salt
– 1/4 cup (21 grams) natural unsweetened cocoa powder
– 1 cup (120 grams) all-purpose flour
For the Peanut Butter Layer:
– 1 cup (270 grams) smooth peanut butter
– 1 cup (113 grams) confectioners’ sugar
– 2 tablespoons milk
For Topping:
– Chocolate chips
– Peanut butter chips
Instructions
- Preheat your oven to 350°F (175°C). Line an 8-inch square baking dish with aluminum foil, allowing the foil to extend over the edges for easy removal. Spray the foil with nonstick cooking spray.
- In a large microwave-safe bowl, combine the butter and chopped semisweet chocolate. Microwave at 50% power for 1 minute, then stir. Repeat microwaving in 1-minute increments at 50% power, stirring after each until the mixture is fully melted and smooth. Ensure not to overheat, which can cause the chocolate to seize.
- Whisk in the eggs one at a time until combined. Add the sugar, vanilla extract, and salt, stirring well. Incorporate the cocoa powder and flour using a wooden spoon; the batter will be thick and require some effort to mix evenly.
- In a medium bowl, mix together the peanut butter, confectioners’ sugar, vanilla extract, and milk by hand or with a mixer until smooth and well combined. If the mixture is too thick, add a little more milk to reach the desired consistency.
- Spread half of the brownie batter evenly in the bottom of the prepared pan. Dollop the peanut butter mixture in clumps over the batter, then gently press and smooth it out into an even layer using the bottom of a measuring cup or glass.
- Carefully spread the remaining brownie batter on top of the peanut butter layer, using a knife to smooth it to the edges. Sprinkle the chocolate chips and 2 tablespoons of the peanut butter chips evenly over the top.
- Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out with moist crumbs. Remove from the oven and transfer the pan to a wire rack to cool completely.
- Once cooled, cut the brownies into 16 squares. Melt the remaining 4 tablespoons of peanut butter chips in a small microwave-safe bowl by heating for 30 seconds, stirring and repeating until smooth.
- Transfer the melted chips to a small plastic bag, snip off a corner, and drizzle over the brownies. Refrigerate for 10 minutes to allow the drizzle to set before serving.
Kitchen Tools You’ll Need
To make these delicious brownies, you’ll need the following kitchen tools:
- Microwave-safe bowl: For melting the chocolate and butter.
- Mixing bowls: One large for the brownie batter and one medium for the peanut butter mixture.
- Whisk and wooden spoon: For mixing ingredients. A sturdy whisk is ideal for beating the eggs and sugar together, ensuring a light and fluffy batter.
- Measuring cups and spoons: To accurately measure your ingredients. Precision is key for a perfect bake, and using level measurements can prevent dense or dry brownies.
- 8-inch square baking dish: The perfect size for a thick, fudgy brownie. A glass dish allows you to monitor the baking process, while metal pans might result in a slightly faster bake.
- Aluminum foil and nonstick cooking spray: For easy removal and cleanup. Parchment paper can be an alternative to foil.
- Wire rack: For cooling the brownies evenly. This prevents the bottoms from becoming soggy.
- Plastic bag: For drizzling the melted peanut butter chips. A piping bag or a spoon can also work if you prefer.
The Benefits of Each Ingredient

Every ingredient in this recipe plays a crucial role in creating the perfect brownie:
- Butter: Adds richness and moisture to the brownies, contributing to their fudgy texture.
- Chocolate: The star of the show, providing that deep, chocolatey flavor. Using good quality chocolate can make a noticeable difference in taste.
- Eggs: Act as a binding agent and contribute to the brownies’ structure. Room temperature eggs blend more easily into the batter.
- Sugar: Sweetens the brownies and helps create a delicate crust. Adjusting sugar levels can alter sweetness according to your taste.
- Salt: Enhances the chocolate flavor and balances sweetness. A pinch of salt can elevate the overall taste profile.
- Cocoa Powder: Intensifies the chocolate flavor and adds depth. Choose a high-quality cocoa for richer flavor.
- Flour: Provides structure and stability to the brownies. Sifting the flour can prevent lumps in the batter.
- Peanut Butter: Offers a creamy, nutty layer that contrasts beautifully with the chocolate. Natural peanut butter can add a more authentic taste, but ensure it’s well-stirred.
- Confectioners’ Sugar: Sweetens the peanut butter layer without making it gritty. It dissolves easily, ensuring a smooth filling.
- Milk: Adds creaminess to the peanut butter mixture. Any type of milk can be used, including plant-based alternatives.
- Vanilla Extract: Enhances the overall flavor profile of the brownies. Pure vanilla extract is preferable for a richer aroma.
- Chocolate and Peanut Butter Chips: Add texture and extra bursts of flavor. Feel free to experiment with different types of chips or even add white chocolate for contrast.
What to Serve With This
These Peanut Butter Stuffed Brownies are a delightful treat on their own, but here are some suggestions to elevate your dessert experience:
- Ice Cream: A scoop of vanilla or chocolate ice cream pairs perfectly with the warm, gooey brownies. The cold ice cream contrasts beautifully with the warm, rich flavors of the brownies.
- Whipped Cream: A dollop of freshly whipped cream adds a light, airy contrast to the dense brownies. For added flavor, try incorporating a hint of cinnamon or nutmeg into the cream.
- Fresh Berries: Strawberries, raspberries, or blueberries can add a refreshing tartness. The acidity of the berries complements the sweetness of the brownies.
- Hot Coffee or Cold Milk: These beverages complement the rich flavors of the brownies. Coffee enhances the chocolate’s complexity, while milk provides a creamy balance.
For more dessert inspiration, check out our Ultimate Chocolate Cake Recipe for another chocolate indulgence, or try our Classic Chocolate Chip Cookies for a traditional favorite.
Storage & Leftover Tips
Proper storage is key to maintaining the quality of these brownies:
- Room Temperature: Store brownies in an airtight container at room temperature for up to 3 days. This keeps them soft and chewy.
- Refrigeration: If you prefer a firmer texture, refrigerate them for up to a week. They will maintain their flavor and texture better than at room temperature.
- Freezing: Wrap individual brownies in plastic wrap, then place them in a freezer-safe bag. Freeze for up to 3 months. Thaw at room temperature before serving. Freezing in individual portions allows you to enjoy them as needed without defrosting the entire batch.
- Refreshing: To enjoy a warm brownie, microwave it for about 10-15 seconds. This brief heating can revive the gooey texture and enhance the flavors, making them taste freshly baked.
For more tips on maximizing your baking, visit Serious Eats for a treasure trove of culinary wisdom.

In conclusion, these Peanut Butter Stuffed Brownies are a must-try for any dessert lover. The combination of rich chocolate and creamy peanut butter is irresistible, making them a favorite for all occasions. Happy baking!

Peanut Butter Stuffed Brownies
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C). Line an 8-inch square baking dish with aluminum foil, allowing the foil to extend over the edges for easy removal. Spray the foil with nonstick cooking spray.
- In a large microwave-safe bowl, combine the butter and chopped semisweet chocolate. Microwave at 50% power for 1 minute, then stir. Repeat microwaving in 1-minute increments at 50% power, stirring after each until the mixture is fully melted and smooth.
- Whisk in the eggs one at a time until combined. Add the sugar, vanilla extract, and salt, stirring well. Incorporate the cocoa powder and flour using a wooden spoon; the batter will be thick and require some effort to mix evenly.
- In a medium bowl, mix together the peanut butter, confectioners’ sugar, vanilla extract, and milk by hand or with a mixer until smooth and well combined.
- Spread half of the brownie batter evenly in the bottom of the prepared pan. Dollop the peanut butter mixture in clumps over the batter, then gently press and smooth it out into an even layer using the bottom of a measuring cup or glass.
- Carefully spread the remaining brownie batter on top of the peanut butter layer, using a knife to smooth it to the edges. Sprinkle the chocolate chips and 2 tablespoons of the peanut butter chips evenly over the top.
- Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out with moist crumbs. Remove from the oven and transfer the pan to a wire rack to cool completely.
- Once cooled, cut the brownies into 16 squares. Melt the remaining 4 tablespoons of peanut butter chips in a small microwave-safe bowl by heating for 30 seconds, stirring and repeating until smooth.
- Transfer the melted chips to a small plastic bag, snip off a corner, and drizzle over the brownies. Refrigerate for 10 minutes to allow the drizzle to set before serving.