Prepare a 9x13 baking pan by greasing it, then set aside.

Pour Rice Krispies or other rice cereal into a large bowl, then set aside.

Using a medium pot, bring peanut butter, sugar and corn syrup to a boil, stirring continuously. Take off heat and pour peanut butter mixture over Rice Krispies, mixing until fully combined.

Pour mixture into prepared pan and press down evenly with a spatula.

Melt chocolate chips and butterscotch chips together in a small pot on medium-low heat, stirring continuously to avoid burning. Alternatively, you can melt them in the microwave using a microwave-safe bowl and heating in 30-second intervals.

Pour over Rice Krispies and allow them to set in the baking dish before cutting and serving.