Reese'S Peanut Butter Cup
["2 sticks margarine, melted", "1 c. peanut butter", "1 (12 oz.) pkg. chocolate chips", "1 3/4 c. graham cracker crumbs", "2 1/3 c. powdered sugar"]
["Mix margarine, peanut butter, graham cracker crumbs and powdered sugar.", "Press into 9 x 13-inch pan.", "Melt chocolate chips with 1 tablespoon butter.", "Spread over cooled mixture."]
["margarine", "peanut butter", "chocolate chips", "graham cracker crumbs", "powdered sugar"]