Caramel Cake Icing
["1/2 c. butter", "1 c. brown sugar, firmly packed", "1/4 c. milk", "1 3/4 to 2 c. sifted confectioners sugar"]
["Melt butter and brown sugar; cook over low heat for 2 minutes. Stir constantly.", "Add milk and stir until mixture comes to a boil.", "Cool and add confectioners sugar until right consistency to spread."]
["butter", "brown sugar", "milk", "confectioners sugar"]