This recipe frosts one layer cake or 12 cupcakes. Double for a double layer cake.
1 oz. Unsweetened chocolate square
1 1/2 Tab. Margarine or butter
1 1/4- 1 1/2 cups powdered sugar
1/8 cup hot (boiling) water
1/2 tea. Vanilla extract
Melt chocolate and butter together. Stir together. Stir in water until thoroughly combined. Add powdered sugar, beginning with 1 cup, and combine. Looking at the texture, judge whether you need to add 1/4-1/2 cup more powdered sugar. Add salt and vanilla and check consistency to judge whether you need to add more powdered sugar, 1 Tab. at a time.