Bring just to a boil and remove from heat. Stir in peanut butter. Add rice krispies and mix well.
Press mixture into large baking sheet (11X17). Melt the chocolate and butterscotch chips in the microwave on high for 2 minutes. Stir. Continue microwaving for 30 second spurts until chips are melted.
Spread chips on top of rice krispie mixture. Let chocolate set. Cut into squares and really, try to share a few before you eat the entire batch!