Double your chocolate pleasure with two layers of brownies frosted and topped with chopped REESE'S Peanut Butter Cups.
Heat oven to 325°F (350°F for glass pan). Line 9-inch square pan with foil, allowing some to hang over edges of pan. Grease bottom and sides of foil with shortening or cooking spray. Make and bake brownies as directed on box for cakelike brownies. Cool completely on cooling rack, about 1 1/2 hours.
Because the frosting is poured on the brownie when it's completely cool, the frosting will appear thicker than when poured onto a hot brownie or cake.
