Mix brown sugar, margarine, peanut butter and milk; stir in peanuts. Spread frosting over warm 13 x 9 inch cake. Set oven control to broil or 550 degrees. Broil cake about 5 inches from heat until frosting bubbles and browns slightly, about 3 minutes. (Watch carefully - frosting burns easily) Frosts a 13 x 9 inch cake.
|