In a large bowl, combine the first six ingredients. In a small bowl, beat the egg, bananas, oil and extracts. Stir into dry ingredients just until moistened. Fold in zucchini and walnuts., Transfer to three 5-3/4x3x2-in. loaf pans coated with cooking spray. Bake at 325degrees for 40-45 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pans to wire racks.