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Decadent Buckeye Brownies with Peanut Butter Fudge Layer

A single, thick square of layered buckeye brownies featuring a dark chocolate base, creamy peanut butter middle, and glossy chocolate topping.

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Make rich, fudgy Buckeye Brownies featuring a creamy peanut butter center and a glossy chocolate ganache topping. This layered dessert combines the classic candy flavors into an easy-to-make bar.

Ingredients

Scale
  • 1 box (18.3 oz) fudge brownie mix (plus ingredients listed on box for brownies)
  • 1 cup (2 sticks) unsalted butter, softened
  • 1 cup creamy peanut butter
  • 4 cups powdered sugar, sifted
  • 1 teaspoon vanilla extract
  • 1/4 cup milk
  • 1 1/2 cups semi-sweet chocolate chips
  • 2 tablespoons shortening or coconut oil

Instructions

  1. Prepare the brownie base according to the box directions, substituting water with milk if you want a richer texture. Pour the batter into a greased 9×13 inch baking pan.
  2. Bake the brownies according to the package directions for a 9×13 pan. Let the brownies cool completely in the pan on a wire rack.
  3. To make the peanut butter layer, beat the softened butter and peanut butter together in a large bowl until smooth.
  4. Gradually add the sifted powdered sugar and vanilla extract, mixing on low speed until combined. Add the milk one tablespoon at a time until the mixture is smooth and spreadable, like a thick frosting.
  5. Spread the peanut butter mixture evenly over the cooled brownie layer.
  6. To make the chocolate topping, combine the chocolate chips and shortening in a microwave-safe bowl. Microwave in 30-second intervals, stirring well after each, until the chocolate is completely smooth.
  7. Pour the melted chocolate mixture over the peanut butter layer. Tilt the pan gently to spread the chocolate evenly, creating a smooth, glossy finish.
  8. Chill the brownies in the refrigerator for at least 2 hours, or until the chocolate topping is firm.
  9. Cut the chilled brownies into squares to serve. These are the ultimate peanut butter chocolate squares.

Notes

  • For a fudgier brownie, reduce the liquid slightly from the box mix instructions.
  • If you prefer a firmer peanut butter layer, use slightly less milk in the filling mixture.
  • You can use a box brownie mix to make these easy brownie bars quickly.
  • For a gluten free option, substitute the brownie mix with your favorite gluten free mix.

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