Because bananas are a go-to egg replacer, you don't even need eggs in banana bread. As a result, no additional egg replacers are required. However, if you simply want to add them, there are many ways to substitute eggs in banana bread. For example, you can use applesauce (1/4 cup per egg), a Flax Egg, a Chia Egg, or whipped tofu (1/4 cup per egg).