1 pkg. (1 lb., 2 1/2 oz.) white cake mix
2 eggs
1/2 c. water
1 c. mashed bananas
Creamy Nut Frosting (recipe below)

Combine all ingredients except frosting. Beat thoroughly until smooth, about 5 minutes. Turn into two greased and floured 9 inch layer pans. Bake at 350 degrees for 25 to 30 minutes. Fill and frost cooled layers with Creamy Nut Frosting:

1/2 c. butter1 tbsp. vegetable shortening
4 c. confectioners sugar
1/4 c. evaporated milk
1 c. ground nuts

Cream together butter, shortening and sugar until smooth. Stir in milk. Frost cake. Sprinkle nuts over top and sides.