Have ready a 13 x 9 inch baking pan. Mix the powdered sugar, cracker crumbs, peanut butter and butter in a medium size bowl until blended. Scrape into an ungreased baking pan and press into an even layer. spread the melted chocolate over the top. Refrigerate at least 2 hours until the chocolate is firm. Let stand at room temperature, 15 to 20 minutes before cutting with a sharp knife into bars. Makes 36 bars Per bar: 173 cal, 3g pro, 18g car, 10g fat, 10mg chol with butter, 1 mg chol with margarine, 113 mg sod. From WOMANS DAY 2/18/92 Shared by Robert Rostrup