Preheat oven to 350. Grease and flour 13 x 9 x 2-inch pan.
Combine cake mix, eggs, water, flour and oil in large bowl. Beat at low speed with electric mixer until moistened. Beat at medium speed 2 minutes. Stir in chocolate chips. Pour into prepared pan. Bake at 350 for 32 0 35 minutes or until toothpick inserted in center comes our clean. Cool completely.
Slice bananas. Cut cake into squares; top with banana slices. Drizzle with chocolate syrup. Top with whipped topping, walnuts and sprinkles. Garnish with maraschino cherries.
NOTE: Dip bananas in diluted lemon juice to prevent darkening.