Peanut Butter Cup Bars
["1 c. butter, softened", "1 2/3 c. graham cracker crumbs", "1 c. peanut butter", "1 lb. powdered sugar", "1 (6 oz.) pkg. chocolate chips"]
["Mix butter, graham crackers, peanut butter and sugar by hand. Press mixture into a greased 9 x 13-inch pan.", "Refrigerate.", "Melt chocolate bits.", "Frost peanut butter mixture with melted chocolate.", "Cut into small squares; they are very rich."]
["butter", "graham cracker crumbs", "peanut butter", "powdered sugar", "chocolate chips"]