Moist & Delicious Banana Nut Bread

I got this recipe when I was 12 and have used it for the past 33 years and haven't found one better! My son used it when he was 12 at the California State Fair and won a first place ribbon with it. It is just simply delicious & moist. I either make a loaf or put it into muffin cups & make muffins for my kids to grab in the morning on their way to school. Using margarine makes the muffins come out in a better form, but the butter has a better flavor, so I usually use 1/2 of each to get the best of both worlds.