Preheat oven to 350F. In a mixing bowl, cream butter and sugar. Beat in eggs, bananas, and vanilla. Combine the flour, baking soda and salt. Add to cream mixture and mix well. Pour into a greased 15 x l0 x l inch baking pan. Bake at 350F for 25 minutes or until bars test done. Cool.
Cream butter and cream cheese in mixing bowl. Gradually add confectioners sugar and vanilla; beat well. Spread over bars.
Cajun Country -- New Iberia, Louisiana