- 1/4 teaspoon salt
- 1 cup light brown sugar
- 1/2 cup white sugar
- 1/2 cup unsalted butter
- 1/2 cup creamy peanut butter
- 2 eggs
- 1 teaspoon vanilla extract
- 1/2 cup chopped walnuts
- 1 (13 ounce) package miniature chocolate covered peanut butter cups, halved
- 2 cups semisweet chocolate chips
- 1/2 cup unsalted butter
- 1 1/2 cups all-purpose flour
- 1 teaspoon baking powder
- Preheat oven to 350 degrees F (175 degrees C). Coat a 13 x 9 x 2 inch pan with nonstick cooking spray.
- Stir together flour, baking powder, and salt in small bowl. Beat together sugars, 1/2 cup butter and peanut butter in a large bowl with electric mixer until smooth. Add eggs one at a time, beating well after each addition. Beat in vanilla. Stir in flour mixture to blend. Fold in chopped nuts.
- Pour batter into prepared pan. Press the peanut butter cups lightly into the batter.
- Bake at 350 for 20-25 minutes. Cool in pan.
- To Make Topping: Melt chocolate and 1/2 cup butter in a small bowl in the microwave in 30 second intervals, stirring after each interval, until smooth. Drizzle the chocolate in pan. Cut into bars.