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Slices of Buckeye Brownies with a creamy peanut butter layer and glossy chocolate topping.
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Buckeye Brownies

Ultra-fudgy Buckeye Brownies with a creamy peanut butter layer + glossy chocolate topping. A Nostalgic chocolate-PB dessert everyone loves.
Course Dessert
Cuisine American
Keyword buckeye recipes, How do I make Peanut Butter Brownies Recipe, peanut butter chocolate recipes
Prep Time 20 minutes
Cook Time 25 minutes
Chill Time 1 hour
Total Time 1 hour 45 minutes
Servings 16 brownies
Calories 554kcal
Author Kathleen

Ingredients

Brownie Layer

  • 1 cup salted butter melted
  • 1 1/2 cups light brown sugar packed
  • 1/2 cup granulated sugar
  • 1/2 teaspoon espresso powder
  • 2/3 cup unsweetened cocoa powder
  • 3 large eggs
  • 2 teaspoons vanilla extract
  • 1/2 teaspoon fine salt
  • 1/2 cup all-purpose flour
  • 1/2 cup semi-sweet chocolate chips

Peanut Butter Layer

  • 1 1/2 cups creamy peanut butter
  • 1 1/4 cups powdered sugar
  • 1/4 cup salted butter softened
  • 2–3 tablespoons heavy cream
  • 1/2 teaspoon vanilla extract
  • pinch of salt

Chocolate Topping

  • 1 cup semi-sweet chocolate chips
  • 1 teaspoon neutral oil

Instructions

Make the Brownies

  • Preheat oven to 350°F (177ºC). Line an 8×8-inch pan with parchment paper.
  • Bloom the cocoa: In a large bowl, whisk the melted butter (1 cup), brown sugar (1 1/2 cups), granulated sugar (1/2 cup), espresso powder (1/2 teaspoon), and cocoa powder (2/3 cup) until smooth and glossy.
  • Add eggs and flavorings: Whisk in the eggs one at a time until fully incorporated. Add vanilla (2 teaspoons) and salt (1/2 teaspoon).
  • Add flour: Sprinkle flour (1/2 cup) over the batter and whisk just until no streaks remain. Fold in the chocolate chips (1/2 cup).
  • Bake: Spread the batter into the prepared pan. Bake 25–30 minutes, or until edges are set and the center looks slightly soft. A toothpick should come out with a few moist crumbs.
  • Cool completely: Allow brownies to cool in the pan at least 60 minutes, or chill 20–30 minutes.(Warm brownies will melt the peanut butter layer.)

Make the Peanut Butter Layer

  • In a medium bowl, beat together the peanut butter (1 1/2 cups), powdered sugar (1 1/4 cups), softened butter (1/4 cup), heavy cream (2–3 tablespoons ), vanilla (1/2 teaspoon), and a pinch of salt until smooth and creamy.
    Spread over the cooled brownie layer. Refrigerate 15–20 minutes.

Add the Chocolate Topping

  • Melt chocolate chips (1 cup) with 1 teaspoon oil (or 1 tablespoon butter) in the microwave in 20–30 second bursts, stirring between intervals, until smooth.
    Pour and smooth over the peanut butter layer. Chill 15 minutes, or until the chocolate is set but sliceable.

Notes

  1. Let each layer cool fully. Warm brownies → melted PB layer → messy slices. Give each layer its moment.
  2. Don’t rush the chilling time. Those two short chilling periods are what give you crisp chocolate, creamy PB, and neat squares.
  3. Avoid the microwave. It melts the topping layers and can ruin the texture.
  4. Use parchment + overhang. Makes it so easy to lift the whole slab out in one piece.
    Serve chilled. The chocolate topping has the best crunch straight from the fridge.

Nutrition

Serving: 1brownie | Calories: 554kcal | Carbohydrates: 55g | Protein: 9g | Fat: 36g | Saturated Fat: 16g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 13g | Cholesterol: 76mg | Sodium: 313mg | Potassium: 340mg | Fiber: 4g | Sugar: 44g | Vitamin A: 530IU | Vitamin C: 0.01mg | Calcium: 56mg | Iron: 2mg