1 pkg. Duncan Hines banana cake mix
3/4 tsp. baking powder
1 1/2 c. mashed bananas (3)
3 eggs
1/2 c. water
1/3 c. oil
1/2 c. chopped walnuts

Mix all of the above for 3 minutes at medium speed and pour into greased 13 x 9 x 2 pan. Crumbs: 1/2 c. flour 1/4 c. butter

Sprinkle over top of cake and bake at 350 degrees for 40 minutes.