In saucepan over low heat, melt:

1/2 c. butter
1 c. chocolate chips
1 c. peanut butter

When melted, add 1 (10 ounce) package marshmallows or 40 large marshmallows, keeping heat low until melted. Remove from heat and add 1 cup peanuts, 4 cups Rice Krispies; mix well and put in greased 9 x 13 inch pan.

FROSTING:

Melt in saucepan, 1 cup chocolate chips, 1/3 cup milk and 1/4 cup butter. Remove from heat and add 1 1/2 cups powdered sugar. Mix well. Spread over bars and store in refrigerator.