Banana Sheet Cake

1 (18.25 ounce) box banana cake mix
1 small box vanilla instant pudding
4 eggs
1 cup water
2 very ripe mashed bananas
1/2 cup chopped nuts

Heat oven to 350 degrees F.

Mix all ingredients, and pour into greased and floured sheet cake pan. Bake for 30 minutes. Cool before frosting.

Banana Frosting:
1 (3 ounce) package cream cheese
1/2 mashed banana
1/4 stick butter, softened
1 (16 ounce) box confectioners' sugar

Cream together. Sprinkle with nuts after frosting, if desired.