1In medium bowl, beat pudding mix (dry) and milk with wire whisk or electric mixer on low speed about 2 minutes or until well blended. Fold in whipped topping. Cover and refrigerate 1 hour.
2Heat oven to 350°F. Grease and flour 9-inch round cake pan. In large bowl, beat all dessert ingredients with electric mixer on low speed 30 seconds, scraping bowl constantly. Beat on medium speed 4 minutes, scraping bowl occasionally. Pour into pan.
3Bake about 30 minutes or until toothpick inserted in center comes out clean. Cool 10 minutes; remove from pan. Cool completely, about 1 hour.
4Serve cake topped with pudding and bananas; drizzle with chocolate topping. Store in refrigerator.