1 cup corn syrup
1 cup granulated sugar
1 cup peanut butter
6 cups rice krispies
1 (6 oz) bag semi-sweet chocolate chips
1 (6 oz) bag butterscotch chips
In large saucepan, combine the sugar and corn syrup, and bring to a boil over medium-high heat. Remove from the heat and stir in peanut butter. Add the rice krispies and mix until well blended. Press into buttered sheet pan.
Over a double boiler, melt together chocolate chips and butterscotch chips and stir until evenly combined and melted throughly. Spread the chocolate mixture evenly over the bars and let cool.Source: Kelloggs