Enough to cover the top of a 13" x 9" cake
3 tablespoons milk
3 tablespoons butter or margarine
1/2 cup brown sugar, firmely packed
1 2/3 cups confectioners sugar, sifted
Combine milk, butter, and brown sugar in a saucepan. Heat until sugar is dissolved. Cool to room temperature. Stir in confectioners sugar. Beat until icing is of spreading consistency.
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