Sift together the dry ingredients. Add the shortening, milk and bananas. Beat for 2 minutes. Add eggs and beat for 2 minutes more. Add nuts and stir to blend. Pour into greased and floured 9x13x2-inch pan or into two 9-inch pans. Bake in preheated 350 degree oven 30-35 minutes for round pans, 45 minutes for larger pan. Cool and frost with a buttercream frosting. This cake was a second place winner at the Del Mar fair. Jo Anne Merrill