Baked box brownie crust topped with sweet peanut butter, chopped mini peanut butter cups, and drizzled with chocolate frosting! The perfect, show-stopping dessert!
Prepare brownies according to box directions. Spread into a well-greased 12 inch pizza pan.
Bake at 350 degrees for 26 - 28 minutes or until a cake tester comes out clean. Cool completely.
In the bowl of a stand mixer, beat peanut butter, powdered sugar, and milk until smooth and fluffy. Spread over cooled brownies in pan.
Press chopped peanut butter cups and chocolate chips into peanut butter.
In a small bowl, microwave chocolate frosting 15 - 20 seconds. Drizzle over brownies. Refrigerate until ready to serve.