Caramel Icing
["1/2 c. brown sugar", "1/2 c. white sugar", "1/3 c. milk", "1 tsp. white Karo", "3 Tbsp. butter", "1 tsp. vanilla"]
["Boil 4 or 5 minutes. Beat until cool."]
["brown sugar", "white sugar", "milk", "white Karo", "butter", "vanilla"]