Chocolate Peanut Butter Squares
["2 c. peanut butter", "1 box powdered sugar", "1 1/2 sticks margarine, melted", "1 tsp. vanilla", "1 (12 oz.) bag chocolate chips"]
["Mix peanut butter, powdered sugar, melted margarine and vanilla until well blended.", "Press into a 9 x 13-inch pan.", "Melt the chocolate chips over low heat.", "Pour and spread over mixture like frosting.", "Let set before cutting."]
["peanut butter", "powdered sugar", "margarine", "vanilla", "chocolate chips"]