Chocolate Butter Frosting - cooking recipe

Ingredients

1/2 c. butter or margarine
1 lb. (about 4 c.) powdered sugar
3 to 4 sq. unsweetened chocolate, melted
4 Tbsp. milk (about)
1/8 tsp. salt
1 tsp. vanilla

Preparation

Cream the butter. Add salt and part of the sugar gradually, blending well.
Add melted chocolate and vanilla. Add rest of sugar alternately with milk until frosting is smooth and thick enough to spread.