Butterscotch Bars

In a saucepan, mix brown sugar and karo syrup and bring to a boil with white bubbles. Take off the burner and add the peanut butter. In a bowl add the rice krispies. Pour hot mixture over the cereal and mix. Pat the cereal mixture in a greased 9"x13" cake pan. In another saucepan, melt the butterscotch chips over low heat. Spread melted chips over the cereal mixture. Cool slightly then cut into 1 ½Ì± squares and serve.