Chocolate Banana Cake
["1 pkg. chocolate cake mix", "1 c. water", "3 eggs", "1/3 c. oil", "3 ripe bananas, mashed"]
["Prepare ingredients in order given, beating 3 minutes.", "Pour into a 13 x 9-inch pan.", "Bake for 30 minutes, until done."]
["chocolate cake mix", "water", "eggs", "oil", "bananas"]