This is my mom's recipe that I've tweaked.
1 3/4 cups flour
2 tsp baking powder
3/4 tsp baking soda
1/2 tsp salt
1/3 cup canola oil
1 cup sugar
2 eggs
2-3 mashed overripe bananas
Bake at 350 degrees. Makes either 2 medium loafs (50 minutes) or 1 large loaf (1 hour) and 1 small loaf (take out after 40 minutes).