Adapted from kraftrecipes.com
pkg. (2-layer size) yellow cake mix
cups mashed fully ripe bananas (about 3), divided
cup chopped PLANTERS Walnuts
pkg. (3.4 oz. each) JELL-O Vanilla Flavor Instant Pudding
cups cold milk
Tbsp. powdered sugar
HEAT oven to 350ºF. PREPARE cake batter as directed on package; stir in 1/2 cup bananas and nuts. Pour into 13x9-inch baking dish sprayed with cooking spray. BEAT pudding mixes, milk and water in medium bowl with whisk 2 min.; stir in remaining bananas. Pour over batter in dish; place on baking sheet. BAKE 55 min. to 1 hour or until toothpick inserted in center comes out clean. Cool 20 min. (Sauce will thicken slightly as it cools.) Sprinkle with sugar. Serve warm.