Preparation of the Cereal Base: Commence by placing the Rice Krispies cereal into a large bowl. This bowl should be positioned conveniently for subsequent steps.

Combining Sweet Ingredients: In a medium saucepan, combine granulated sugar, smooth peanut butter, and light corn syrup. Position the saucepan over a medium-high heat setting, stirring constantly to ensure uniform heating and to prevent sugar from caramelizing.

Incorporation into Cereal: Once the mixture reaches a boil, immediately pour it over the Rice Krispies cereal in the prepared bowl. Stir thoroughly to ensure that each piece of cereal is evenly coated with the mixture.

Formation in Baking Dish: Transfer the coated cereal mixture into a greased 9-x-13-inch baking dish. Utilize a spatula or the back of a spoon to press the mixture evenly across the dish, achieving a consistent thickness.

Melting of Chocolate and Butterscotch Chips: In a separate, smaller saucepan, combine the semisweet chocolate chips and butterscotch chips. Place over a low heat setting, stirring continuously until the chips are completely melted and the mixture is smooth.

Application of Chocolate Layer: Pour the melted chocolate and butterscotch mixture over the pressed Rice Krispies in the baking dish, ensuring an even coating.

Setting and Serving: Allow the Scotcheroos to set for a minimum of 30 minutes. Once set, use a sharp knife to slice the preparation into desired portions for serving.