MOUNDS CAKE

1 box Swiss chocolate cake mix
--ICING A:--
1 c. sugar
1 c. Pet milk
24 lg. marshmallows
14 oz. pkg. coconut
--ICING B:--
2 c. sugar
1/2 c. Pet milk
1 tsp. vanilla
3 heaping tbsp. cocoa
1 stick butter
Mix cake mix as box directs and bake in oblong pan. When cool, spread on Icing A, then Icing B. ICING A: Cook sugar, milk and marshmallows together until marshmallows are melted. Stir in coconut and spread on cake. ICING B: Bring sugar, cocoa, milk and butter to a boil and cook 1 minute. Remove from heat, stir in vanilla. Beat until thick and creamy. Spread over first icing.