1 (6 oz.) (1 c.) pkg. semi-sweet chocolate chips
1 (6 oz.) (1 c.) butterscotch chips
1/4 c. peanut butter
4 1/2 c. plain Rice Krispies

In a large bowl, melt first 3 ingredients in microwave oven until creamy. Add Rice Krispies and stir. Press into 9 x 12 inch pan and let cool. (Do not cover until completely cool.)