Reese'S Squares
["1 1/2 sticks margarine", "1 lb. powdered sugar", "12 oz. peanut butter", "12 oz. chocolate chips"]
["Melt margarine on stove, blend with peanut butter and powdered sugar until mixture becomes smooth and creamy.", "Spread in 9 x 13-inch pan.", "Then melt chocolate chips and pour over peanut butter mixture.", "Refrigerate and cut into squares."]
["margarine", "powdered sugar", "peanut butter", "chocolate chips"]