Quick Caramel Frosting
["1/2 c. margarine", "1 c. brown sugar, packed", "1/4 c. milk", "1 3/4 to 2 c. sifted confectioners sugar"]
["Melt butter in saucepan; add brown sugar.", "Boil over low heat 2 minutes, stirring constantly.", "Add milk and continue stirring until mixture comes to a boil.", "Remove from heat, cook; add confectioners sugar, beating well after each addition.", "Fills and frosts top and sides of 2 (8 or 9-inch) layer cake."]
["margarine", "brown sugar", "milk", "confectioners sugar"]