1For cake, combine first 5 ingredients in a bowl. Add eggs, oil and vanilla, stirring until ingredients are moistened. Do not beat with a mixer. Stir in pineapple, pecans, and bananas. Pour into 3 greased and floured round cake pans or sheet cake pan sprayed with cooking spray. Bake @ 350 degrees 23-28 min. Takes a little longer for sheet cake. Cool and frost.
For frosting, beat cream cheese and butter. Gradually add powdered sugar. Beat until fluffy.Stir in vanilla. Spread on cake. Sprinkle with chopped nuts.