1/4 cup butter (1/2 stick)
2 cups powdered sugar
1 tsp vanilla
2 Tbps milk

1 1/2 ounce squares of unsweetened chocolate melted
Add after first 1/4 cup of sugar

1/4 cup butter (1/2 stick) 2 cup s powdered sugar 1 tsp vanilla 2 Tbps milk 1 1/2 ounce squares of unsweetened chocolate melted

Thoroughly cream butter and sugar
Stir in vanilla
Add milk as frosting becomes thick