Beat sugars, shortening, peanut butter and eggs until smooth. Stir in flour, soda, and baking powder. Reserve 1-1/2 c. Press remaining dough in ungreased 13x9x2 pan. Mix reserved 1-1/2 c dough and candies. Crumble into pan, pressing lightly. Bake 350 for 20-25 mins. Cool. Cut. Makes 36 bars.