Frosted rice crispy bars

1 cup light karo syrup
1/2 cup sugar.
1 cup peanut butter
4-5 cups rice krispies
1 cup butterscotch chips
1 cup chocolate chips (semi sweet)

Bring to a boil the karo syrup and the sugar.  Add 1 cup peanut butter and remove from heat.  Stir until the peanut butter is melted.  Add 4 to 5 cups of Rice Krispies.  Spread in a 9x13 greased pan.  Melt 1 cup chocolate chips and 1 cup of butterscotch chips.  Spread on top of the rice krispy mixture.  Cut into squares when cooled.