Banana bread became a household recipe in the 1930s with the popularization of baking powder and baking soda. It’s also believed that banana bread became a popular recipe during the Great Depression because nothing was wasted. Overripe bananas were baked into a quick bread to avoid waste. Many older banana bread recipes use wheat bran (since it was very filling) but this recipe does not. Older recipes also often call for buttermilk which was often less expensive.