Butterscotch Frosting(Good Flavor And Quickly Made)  
["1/2 c. (1/4 lb. stick) butter", "1 c. firmly packed light brown sugar", "1/4 c. milk", "2 c. (about) sifted confectioners sugar"]
["In", "a", "deep", "8-inch skillet over low heat, melt butter. Add brown", "sugar,", "stirring", "constantly.", "Cook for 2 minutes. Add milk.", "Stir", "until", "mixture comes to a boil.", "Remove from heat. Cool.", "With", "a", "spoon, gradually beat in enough confectioners sugar, keeping smooth, to give good spreading consistency.", "Use as", "frosting for top and sides of a 9-inch square cake."]
["butter", "brown sugar", "milk", "confectioners sugar"]