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4.8 from 12 votes

Peanut Butter Cup Brownies

Peanut butter cup brownies are a wonderful treat for any peanut butter and chocolate lover. Gooey chocolate brownies are studded with peanut butter cup pieces for a truly indulgent treat.

Prep Time
15 mins
Cook Time
15 mins
Total Time
50 mins
Servings: 16 brownies
Course: Dessert

Ingredients

  • 8 ounces semi-sweet chocolate chips
  • 8 tablespoons unsalted butter cut into chunks (1/2 cup)
  • ¼ cup cocoa powder
  • 1 ½ tablespoons instant espresso powder
  • 3 large eggs
  • 1 ¼ cups granulated sugar
  • 2 teaspoons pure vanilla extract
  • ⅓ cup creamy peanut butter
  • ½ teaspoon salt
  • 1 cup all-purpose flour
  • 8 regular size Reese’s peanut butter cups coarsely chopped

Instructions

    Cup of Yum
  1. Preheat oven to 350°F. Spray an 8″ square baking pan with nonstick cooking spray.
  2. Microwave chocolate chips and butter in microwave for about 45 seconds. If not mostly melted, microwave for 20 more seconds. Stir until smooth. Whisk in the cocoa powder and espresso powder. Set aside.
  3. Whisk together eggs, sugar, vanilla extract, peanut butter and salt until combined.
  4. Whisk the warm chocolate mixture into the egg mixture.
  5. Stir in the flour until just combined.
  6. Fold chopped Reese’s peanut butter cups into batter.
  7. Pour mixture into prepared pan, spread evenly and level the surface with a rubber spatula.
  8. Bake approximately 35-40 minutes. Brownies will be slightly puffed and a toothpick inserted into the center should come out mostly clean.
  9. Cool to room temperature for about 2 hours. 
  10. Cut into 1″ squares. Store in a tightly sealed container at room temperature for up to 3 days.

Notes

  • Make sure you know how to measure flour correctly before starting on this recipe.