Perhaps to decorate a Christmas cake?
From the box of L.R. from Winston-Salem, North Carolina.
1 stick butter
5 cups confectioners sugar
1/4 cup whipping cream
1 teaspoon vanilla
Cream butter thoroughly. Add sugar slowly and continue beating until mixture is light and crumbly. Add cream and vanilla. Beat until completely blended. Portions of dough may be colored with food coloring. Shape and decorate as desired. Store in a cool place.