Buckeye Brownies

These Buckeye Brownies feature a rich fudgy brownie base topped with a creamy peanut butter layer and finished with a smooth chocolate topping. Inspired by classic buckeye candy, they're the perfect combination of chocolate and peanut butter in every bite. Easy to make and ideal for parties, holidays, potlucks, and bake sales, these layered brownies are guaranteed to be a crowd favorite.

Course Dessert

Cuisine American

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Prep Time 30

Cook Time 30

Chill time 1

Total Time 2

Servings 24 brownies

Calories 365kcal

Cost $12 for entire recipe

Equipment

9×13 inch baking pan
Parchment paper
Large mixing bowl
Medium mixing bowl
Whisk
Electric hand mixer or stand mixer
Rubber spatula
Measuring cups and measuring spoons
Microwave-safe bowl
Offset spatula or butter knife (for spreading layers)
Cooling rack
Sharp knife (for slicing)

Ingredients

Brownie Layer

1 cup unsalted butter melted
6 ounces semisweet chocolate melted
1¾ cups granulated sugar
4 large eggs room temperature
1 tablespoon vanilla extract
1⅓ cups all-purpose flour
½ cup unsweetened cocoa powder
1 teaspoon salt

Peanut Butter Layer

1½ cups creamy peanut butter
¼ cup unsalted butter softened
1½ cups powdered sugar
1 teaspoon vanilla extract
¼ teaspoon salt

Chocolate Topping

2 cups semisweet chocolate chips
2 tablespoons creamy peanut butter

Optional Garnish

Flaky sea salt

Instructions

Preheat the oven to 350°F. Line a 9x13-inch baking pan with parchment paper, leaving overhang on the sides for easy removal.
In a large bowl, whisk together the melted butter, melted chocolate, and granulated sugar until smooth and glossy.
Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract.
Add the flour, cocoa powder, and salt. Fold gently until just combined. Do not overmix.
Spread the batter evenly into the prepared pan.
Bake for 28–32 minutes, or until a toothpick inserted near the center comes out with a few moist crumbs attached.
Allow the brownies to cool completely.
In a medium bowl, beat together the peanut butter and softened butter until smooth and creamy.
Add the powdered sugar, vanilla extract, and salt. Beat until fully combined.
Spread the peanut butter mixture evenly over the cooled brownies.
Refrigerate for 15–20 minutes to firm the peanut butter layer.
In a microwave-safe bowl, combine the chocolate chips and peanut butter.
Microwave in 30-second intervals, stirring between each interval, until melted and smooth.
Pour the chocolate mixture over the peanut butter layer and spread evenly.
Sprinkle with flaky sea salt if desired.
Refrigerate for about 1 hour, or until the chocolate topping is fully set.
Let the brownies sit at room temperature for 10 minutes before slicing into 24 squares.

Notes

These homemade Buckeye Brownies are easy to make, but a few simple tips will help ensure perfect results every time. From achieving the fudgiest brownie base to creating smooth, clean layers, these notes will help you get bakery-quality brownies right at home.

Use Room Temperature Eggs

Room temperature eggs blend more easily into the brownie batter, creating a smoother texture and helping the brownies bake evenly. If you forget to set them out ahead of time, place the eggs in a bowl of warm water for about 10 minutes.

Don't Overmix the Brownie Batter

Once you add the dry ingredients, stir only until everything is combined. Overmixing can develop too much gluten, resulting in brownies that are tougher and less fudgy.

Cool the Brownies Completely

The brownie layer must be completely cool before adding the peanut butter layer. Spreading the filling over warm brownies can cause the layers to blend together and become messy.

Choose the Right Peanut Butter

For the best Buckeye Brownies, use a traditional creamy peanut butter such as Jif or Skippy. Natural peanut butter can separate and create a softer filling that may not hold its shape as well.

Chill Between Layers

A short chill time after spreading the peanut butter layer helps it firm up before adding the melted chocolate topping. This keeps the layers distinct and makes the brownies easier to slice.

Use Semisweet Chocolate

Semisweet chocolate provides the perfect balance to the sweet peanut butter filling. Milk chocolate can make the brownies overly sweet, while dark chocolate may overpower the classic buckeye flavor.

Slice Like a Pro

For neat, bakery-style squares, refrigerate the brownies until fully set. Run a sharp knife under hot water, wipe it dry, and clean the blade between cuts.

Let Them Sit Before Serving

While these brownies can be served straight from the refrigerator, allowing them to sit at room temperature for about 10 minutes softens the layers slightly and enhances the chocolate and peanut butter flavors.

Storage Tips

Store Buckeye Brownies in an airtight container in the refrigerator for up to 1 week. They also freeze beautifully for up to 3 months. Thaw overnight in the refrigerator before serving.

Make-Ahead Tip

These brownies are an excellent make-ahead dessert because the flavors become even better after a few hours of chilling. Preparing them a day in advance makes them perfect for parties, holidays, bake sales, and special occasions.