Chocolate Scotcheroos
["1 c. sugar", "1 c. light corn syrup", "1 c. peanut butter", "6 c. Rice Krispies", "1 c. (6 oz. pkg.) semi-sweet chocolate chips", "1 c. (6 oz. pkg.) butterscotch chips"]
["Combine sugar and syrup in a 3-quart saucepan.", "Cook over moderate heat, stirring frequently, until mixture begins to bubble.", "Remove from heat.", "Stir in peanut butter; mix well.", "Add Rice Krispies; stir until well blended.", "Press mixture into buttered 13 x 9-inch pan."]
["sugar", "light corn syrup", "peanut butter", "Rice Krispies", "semi-sweet chocolate chips", "butterscotch chips"]