Chocolate Scotcheroos
["1 c. sugar", "1 c. light Karo", "1 c. (6 oz.) Nestle semi-sweet morsels", "1 c. (6 oz.) Nestle butterscotch morsels", "1 c. peanut butter", "6 c. Rice Krispies"]
["Combine sugar and syrup in 3-quart saucepan.", "Cook over moderate heat, stirring frequently, until mixture boils.", "Stir in peanut butter; mix well.", "Add Rice Krispies.", "Stir until well blended.", "Stir mixture into buttered pan, 13 x 9-inch."]
["sugar", "light Karo", "semi-sweet morsels", "butterscotch", "peanut butter", "Rice Krispies"]