Speedy Caramel Frosting
["1 stick margarine", "1 c. firmly packed brown sugar", "1/4 tsp. salt", "1/4 c. milk", "2 1/2 c. powdered sugar, sifted", "1 tsp. vanilla"]
["Melt margarine in large saucepan.", "Blend in brown sugar.", "Add salt.", "Cook over low heat, stirring constantly 2 minutes.", "Then add milk and continue stirring until mixture comes to a boil. Remove from heat.", "Add powdered sugar.", "Add vanilla; mix well. Spread on cake.", "If icing gets too thick, add small amount of milk or cream.", "May add pecans or walnuts if you like."]
["margarine", "brown sugar", "salt", "milk", "powdered sugar", "vanilla"]