This recipe was clipped from a box of some kind, possibly confectioners’ sugar or cake mix. Recipe is typed below along with a scanned copy.

EASY PENUCHE ICING

1/2 cup butter
1 cup brown sugar (packed)
1/4 cup milk
1 3/4 to 2 cups sifted confectioners’ sugar

Melt butter in saucepan. Add brown sugar. Boil over low heat for 2 minutes, stirring constantly. Stir in milk. Bring to boil, stirring constantly. Cool to lukewarm. Gradually add confectioners’ sugar. Beat until thick enough to spread. If icing becomes too stiff, add a little hot water.