In a large saucepan, over medium heat:
1 c corn syrup
1 c sugar
Stir frequently until mixture begins to boil.
Remove from heat.
Stir in:
1 c peanut butter
Add:
6 c Rice Krispies
Press into a 13 x 9 x 2 pan.
Melt over hot (NOT boiling) water:
1 c semi sweet chocolate chips
1 c butterscotch flavored chips
Stir constantly until smooth.
Spread over cereal.
Chill until firm (15 minutes).
Cut into 48 bars.