Peanut Butter Crunch Icing
["2 egg whites", "1 1/2 c. brown sugar", "1/3 c. water", "1/8 tsp. cream of tartar"]
["In top of double boiler, combine eggs, sugar, water and tartar.", "Cook over boiling water for 7 minutes or until holds in peaks while beating constantly with rotary egg beater.", "Remove; beat until cool.", "Sprinkle with crushed peanut brittle over top of frosted cake."]
["egg whites", "brown sugar", "water", "cream of tartar"]