Caramel Frosting recipe

3 cups granulated sugar
3/4 cup evaporated milk, undiluted
3/4 cup margarine
1 tablespoon white corn syrup
1 teaspoon vanilla extract

Brown 1/2 cup of the sugar in heavy skillet. Add remaining ingredients. Cook 5 minutes. After mixture begins to boil, remove from heat and beat until thick enough to spread.