Easy Penuche Icing
["1/2 cube butter", "1 c. brown sugar, packed", "1/4 c. milk", "1 3/4 to 2 c. powdered sugar"]
["Melt butter.", "Add brown sugar.", "Boil over low heat for 2 minutes, stirring constantly.", "Stir in milk.", "Stir until it comes to a boil.", "Cool to lukewarm.", "Gradually add the powdered sugar; beat until spreading consistency.", "If icing becomes too stiff, add a little hot water.", "Great served over spice cake."]
["butter", "brown sugar", "milk", "powdered sugar"]