- 1/2 teaspoon lemon juice
- 1/2 cup mashed banana
- 1/4 cup butter, softened
- 3 1/2 cups confectioners' sugar, sifted
- Beat banana and lemon juice in a bowl with an electric hand mixer set to Low until completely mixed.
- Beat butter into the banana mixture until creamy.
- Beat confectioners' sugar into the banana mixture in small batches, beating continually, until entirely integrated into a light and fluffy frosting.