Banana Sour Cream Cake

1 pkg yellow cake mix
3 eggs
1 cup mashed ripe banana's (about 3)
1 cup sour cream
1/4 cup oil
1 pkg cream cheese 8oz Softened
1 pkg (160z) powdered sugar
1 cup walnut pieces finely chopped

Heat oven to 350. Beat cake mix, eggs, banana's, sour cream and oil with mixer on low until moistened, scraping bottom of bowl often. Beat on medium for 2 minutes.

Pour into greased and floured 9x13 pan. Bake 35 minutes or until toothpick inserted in center comes out clean. Cool cake completely in pan on wire rack.

Beat cream cheese and butter with mixer on medium until blended. Graduall add sugar, beating well after each addition.

Remove cake from pan- czarefully cut cake crosswise in half using serrated knife.

Plasce 1 cake half, top side down on plate- spread top with frosting. Top with remaining cake half, top-side up. Frost top and sides.

Press nuts onto sides. Refrigerate leftovers.