I found the best-ever, EVER, banana bread recipe in the Starting with Ingredients cook book: Banana Oatmeal Quickbread.
Sweet, light, fluffy and full of flavor. Toss Grandma's recipe - this is THE ONE!
Notes about the recipe: Use the largest bowl for the liquids as you will be adding the flour and buttermilk to it.
The recipe says to bake in two 8-cup pans. I have closer to 5- or 6-cup loaf pans so I got three loaves out of it. The nutrition information shown here is based on the 3 loaves and 16 slices per pan.