- ¼ cup butter - softened
- ½ cup mashed bananas - about 1 large banana
- ½ teaspoon vanilla extract
- 3 ¼ cups confectioners' sugar
- yellow food coloring - optional
- Cream together butter, banana, vanilla, and optional yellow food coloring.
- Slowly beat in confectioners' sugar, adding more if needed to make a nice fluffy, spreadable icing.