HEAT oven to 350ºF.
BEAT egg, Miracle Whip and bananas in large bowl with whisk until blended. Combine remaining ingredients in separate bowl. Add to banana mixture; stir just until moistened.
POUR into 9x5-inch loaf pan sprayed with cooking spray.
BAKE 1 hour or until toothpick inserted in centre comes out clean. Cool in pan 10 min.; remove from pan to wire rack. Cool completely.