A quick and easy tutorial on how to make a flax egg with two ingredients. Use this versatile vegan egg substitute as a binder in eggless baking recipes. It's an excellent alternative for vegan diets, those with egg allergies, or if you simply ran out of eggs. After years of experimenting with bananas, baking soda, tofu, and applesauce, the humble flax egg is my trusty go-to substitute.