Add the ingredients to your bread machine in the order listed.
Wet ingredients are added first into the bottom of the pan. Be sure to beat the eggs and mash the banana before adding.
Make an "island" with the flour on top of the wet ingredients, and then place the other dry ingredients in wells in the flour, including baking powder, baking soda, sugar and salt.
Turn on the bread machine and select the "quick bread" or "cake" setting. This should be a shorter setting without a rise time. If there's a crust darkness setting, select light. (With the sugar in banana bread, the outside tends to burn on darker crust settings.)
Press start and allow the bread machine to run it's full cycle, baking the banana bread in the bread machine.
When complete, open the top and allow the bread to cool for 5 to 10 minutes before removing the pan and taking the bread out to cool completely on a cooling rack.
Notes
Optional - for banana nut bread, add 1/2 cup of chopped nuts when your bread maker "beeps" for the mix ins, usually toward the end of mixing.