2 2/3 c. powdered sugar
3/4 tsp. vanilla
2/3 c. soft butter
2 tbsp. milk
2 oz. melted unsweetened chocolate, cooled

In a small bowl blend all ingredients, except milk at low speed. Gradually add milk and beat until smooth and fluffy. Yields: enough frosting for 9-inch two layer cake or 8-inch three layer cakes.