Go Back
–+ servings
Buckeye brownies stacked on top of eachother to show all three layers.

Fudgy Buckeye Brownies with Peanut Butter

Print Recipe
These Buckeye Brownies are decadent and delicious with a chewy brownie base covered with a succulent peanut butter fudge layer and finished with creamy chocolate ganache.
Course Dessert
Cuisine American
Diet Vegetarian
Keyword Brownies, Buckeye Brownies, Chocolate, Peanut Butter, Peanut Butter Brownies
Prep Time 20 minutes
Cook Time 30 minutes
Cooling and Setting Time 2 hours 30 minutes
Total Time 3 hours 20 minutes
Servings 12 brownies
Author Marley Goldin

Equipment

Ingredients

Brownie Layer

  • ½ cup unsalted butter
  • 1 ¼ cup granulated sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 6 tablespoons all-purpose flour 6 tablespoons = ¼ cup + 2 tablespoons
  • ¾ cup unsweetened cocoa powder I used dark
  • ¼ teaspoon salt

Peanut Butter Layer

  • ¼ cup unsalted butter
  • 1 ¼ cup creamy peanut butter
  • ¾ cup powdered sugar

Ganache Layer

  • 1 cup dark chocolate chips
  • ¾ cup heavy whipping cream
US - Metric

Instructions

Brownie Layer

  • Preheat oven to 350°F and line a 9 x 9-inch baking dish with parchment paper.
  • In a large mixing bowl, use a hand mixer on high to combine the softened butter with the sugar for 2-3 minutes to cream together.
    ½ cup unsalted butter, 1 ¼ cup granulated sugar
    Butter and sugar creamed together for Buckeye Brownie
  • Add the eggs and vanilla and use the hand mixer on low until combined.
    2 large eggs, 2 teaspoons vanilla extract
    Brownie batter before adding dry ingredients in a large mixing bowl.
  • Mix in flour, cocoa powder, and salt and combine until smooth.
    6 tablespoons all-purpose flour, ¾ cup unsweetened cocoa powder, ¼ teaspoon salt
    Thick brownie batter to make a sturdy base for peanut butter and ganache layers.
  • Transfer to your prepped baking dish, using a spatula to push the brownie batter to meet all four corners.
    Thick brownie batter smoothed out in an 8x8-inch baking dish.
  • Bake for 30-35 minutes, until a toothpick comes out clean. Allow to cool for at least 30 minutes before adding your peanut butter and ganache layers.
    Just-baked brownies cooling before adding peanut butter and ganache layers.

Peanut Butter Fudge Layer

  • To a large mixing bowl, add softened butter, creamy peanut butter, and powdered sugar. Use your clean hand mixer on high to whip until smooth.
    ¼ cup unsalted butter, 1 ¼ cup creamy peanut butter, ¾ cup powdered sugar
    Unsalted butter, creamy peanut butter, and powdered sugar mixed together.
  • Once your brownies have had some time to cool, spread the peanut butter fudge mixture on top in an even layer.
    Peanut butter fudge layer smoothed out over brownies.

Chocolate Ganache Layer

  • To a heat-safe mixing bowl add the chocolate chips and heavy cream. Heat in one of two ways:
    Microwave method: Microwave on high for 2 minutes. Use a whisk to combine until smooth.
    Stovetop method: Fashion a double boiler by placing your mixing bowl on top of a pot of boiling water. Heat and whisk until the chocolate chips have melted and your mixture is smooth.
    1 cup dark chocolate chips, ¾ cup heavy whipping cream
    Chocolate ganache made of dark chocolate chips and heavy cream.
  • Pour the ganache over the peanut butter layer and use a spatula to spread it across in an even layer. Place in the refrigerator to cool and set for at least 2 hours before slicing and serving.
    Buckeye brownies ready to sit in the refrigerator to set.

Video

Notes

  • Make sure you allow the brownies to cool for at least 30 minutes before adding the peanut butter and ganache layers.
  • For a shortcut, you can use storebought brownies or a boxed brownie mix for the bottom layer.
  • If your peanut butter is separated and oily, beat or blend it before mixing with the butter and powdered sugar. 
  • If you love brownies as much as I do, you’ll love this collection of my greatest brownie recipes!