3/4 cup white sugar
1 tablespoon margarine
1 tablespoon cocoa
1 teaspoon vanilla
2 tablespoon cornstarch
1 cup hot water
Mix sugar, cocoa and cornstarch in saucepan. Add hot water and bring to a boil on medium heat. Remove from heat and add margarine and vanilla. Cool completely before frosting. (Double this recipe for a two layer cake).