Peanut Butter Bars
["1 1/4 c. graham cracker crumbs", "2/3 c. melted butter or margarine", "2 c. powdered sugar", "1 c. peanut butter", "8 oz. chocolate chips or 5 to 6 Hershey bars"]
["Mix first 4 ingredients over low heat until smooth.", "Spread into 9 x 13-inch pan.", "Melt chocolate chips or Hershey bars over low heat.", "Spread over mixture in pan.", "Refrigerate and cut into squares."]
["graham cracker crumbs", "butter", "powdered sugar", "peanut butter", "chocolate chips"]