With molasses and half and half.
From a box sold in River Forest, Illinois.
Pecan Frosting
1/2 cup butter
4 cups confectioners sugar
2 Tablespoons light molasses
1/2 cup chopped pecans
1/4 cup half and half
Cream together butter, confectioners sugar, and molasses. Stir in pecans. Add enough half and half for spreading consistency.