Step 1

Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 9-inch cake pans.

Step 2

Sift together the flour, sugar, baking soda and salt. Set aside.

Step 3

In a large bowl, combine the oil, eggs, pineapple, bananas and nuts. Add flour mixture, and mix together by hand.

Step 4

Pour batter into prepared pans. Bake in preheated oven until a toothpick inserted in center of each pan comes out clean, about 1 hour. Remove from oven and allow to cool on racks.

Step 5

Prepare the frosting by blending together the cream cheese, butter, sugar and vanilla until smooth. Evenly spread frosting on middle, sides and top of cake.