preparation
In top of double boiler, combine all ingredients, except vanilla, and beat 1 minute at high speed of electric mixer. Place over boiling water (water should not touch bottom of top part); beat on high speed about 7 minutes, until frosting forms peaks when beater is raised. Remove from boiling water (for smoothest frosting, empty into large bowl). Add vanilla and continue beating on high speed until thick enough to spread, about 2 minutes. Spread on sides and top of cold banana cake. |