I saw a recipe that used a yellow cake mix to make banana bread, but I didn't have a yellow cake mix, so we tried something else. It turned out great!
1 chocolate cake mix
4-5 small, mashed bananas
Place all three ingredients in a mixing bowl. Beat with a hand mixer until incorporated.
I bake my banana bread in a bundt pan, but it could be done in a loaf pan. Grease and flour the pan.
Bake at 350 degrees for about 35 minutes.
Cool on a wire rack and then cut.