Stir together flour, baking powder, soda and salt. Combine mashed bananas and cereal; let stand 2 minutes. In large mixing bowl, beat margarine and sugar. Beat in eggs and cereal mixture. Stir in flour mixture and nuts. Spread in greased 9x5x3 inch loaf pan. Bake at 350 degrees about 1 hour or until tests done. Let cool 10 minutes before removing from pan. Cool completely. Yield: 1 loaf. bake 40