Ingredients:

  • 1/2 cup (115g) unsalted butter
  • 1 cup (200g) granulated sugar
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1/3 cup (40g) unsweetened cocoa powder
  • 1/2 cup (65g) all-purpose flour
  • 1/4 teaspoon salt
  • 1/4 teaspoon baking powder
  • 1/2 cup (125g) creamy peanut butter
  • 1/4 cup (60ml) heavy cream

Instructions:

  1. Preheat the oven to 350°F (175°C).
  2. Grease the baking pan or line with parchment paper.
  3. Melt the butter in a bowl. Stir in sugar, egg, and vanilla until well combined. Sift in cocoa powder, flour, salt, and baking powder; mix until just combined.
  4. In a small bowl, mix peanut butter and heavy cream until smooth.
  5. Pour half of the brownie mixture into the prepared pan. Spoon peanut butter mixture over the brownie base. Add remaining brownie batter and swirl with a knife for a marbled effect.
  6. Bake for 25 minutes or until a toothpick inserted comes out slightly moist.
  7. Allow to cool at room temperature for 10 minutes, then refrigerate for at least 30 minutes to set.
  8. Cut into squares and enjoy!