In large microwaveable dish, mix sugar and corn syrup until well blended. Microwave 1-1/2 minutes on High. Remove from microwave and stir. Microwave an additional 1 minute or until sugar is dissolved.
Add SunButter® and mix until smooth. Add cereal. Press into a 9x13-inch greased cake pan.
In medium microwaveable dish, combine chocolate chips and butterscotch chips. Microwave on High 1 minute. Remove from microwave and stir. Microwave 1 minute more or until chips are melted.
Spread melted chips on top of cereal mixture and let cool or refrigerate until chocolate sets. Cut into 24 bars.