Chocolate Scotcheroos

1 cup sugar
1 cup light corn syrup
Combine sugar and corn syrup in large saucepan.  Cook over low heat, stirring constantly to melt sugar, just until mixture comes to boil.  Remove from heat.

Blend in 1 cup peanut butter
Stir in 6 cups Rice Krispies
Press into a 9x13 pan.

Melt together:
1 6-oz pkg chocolate chips
1 6-oz pkg butterscotch chips
Spread over top of bars.