Nana'S Chocolate Frosting - cooking recipe

Ingredients

4 ounces unsweetened chocolate
1/3 cup butter
1 (16 ounce) package powdered sugar
1/2 cup milk
2 teaspoons vanilla

Preparation

Combine chocolate and butter in large saucepan.
Cook over low heat until melted; stirring constantly.
Remove from heat; cool.
Sift sugar; add to chocolate alternately with milk and vanilla.
Beat at high speed until of spreading consistency.