If your bread machine has a Cake, Quick Bread, or Quick Cake setting, this recipe works well:
Bread Machine Cake Mix Banana Bread
Ingredients
1 box yellow cake mix (15.25 oz)
3 ripe bananas, mashed (about 1½ cups)
3 large eggs
⅓ cup melted butter or vegetable oil
Optional: ¾ cup chocolate chips or 1 cup chopped walnuts (Bread Dad)
Directions
Remove the kneading paddle if your machine's manual recommends it for quick breads.
Add mashed bananas, eggs, and melted butter/oil to the bread pan.
Add the cake mix on top.
Select the Cake, Quick Bread, or Quick Cake cycle.
After mixing begins, scrape down the sides with a rubber spatula if needed.
Add chocolate chips or nuts when the machine beeps for add-ins (or about 5 minutes into mixing).
Bake through the cycle. Test with a toothpick; it should come out mostly clean.
Let cool in the pan for 10 minutes, then remove and cool completely. (Bread Dad)
Tips
Yellow cake mix gives the most traditional flavor, but butter pecan, spice cake, or vanilla cake mix also work well. (Bread Dad)
Use very ripe bananas with lots of brown spots for the best flavor. (Bread Dad)
If your machine does not have a Cake or Quick Bread setting, use the Dough/Mix cycle to combine ingredients, then bake in a loaf pan in the oven at 325°F for 60–70 minutes. (Allrecipes)