Ingredients

• Unsalted butter - 1 cup
• Granulated sugar - 2 cups
• Brown sugar - ½ cup
• Eggs - 4 large
• Vanilla extract - 2 teaspoons
• All-purpose flour - 1 cup
• Cocoa powder - ¾ cup
• Salt - ½ teaspoon
• Baking powder - ¼ teaspoon
• Creamy peanut butter - ½ cup
• Powdered sugar - ¼ cup

Instructions

1. 1.

   Preheat the oven to 180°C (350°F). Grease a 9x13 inch baking pan.

2. 2.

   In a microwave-safe bowl, melt the butter. Stir in granulated sugar and brown sugar until well combined.

3. 3.

   Add eggs one at a time, beating well after each addition, then mix in vanilla extract.

4. 4.

   In a separate bowl, whisk together flour, cocoa powder, salt, and baking powder.

5. 5.

   Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

6. 6.

   Pour the brownie batter into the prepared pan and spread evenly.

7. 7.

   In a small bowl, mix the peanut butter with powdered sugar until smooth.

8. 8.

   Drop spoonfuls of the peanut butter mixture on top of the brownie batter.

9. 9.

   Use a knife to gently swirl the peanut butter into the brownie batter.

10. 10.

    Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.

11. 11.

    Allow to cool completely in the pan before slicing and serving.

Nutritional Facts