Applesauce
good1/4 cup per large egg
Adds moisture and binding, best in muffins, quick breads, and dense cakes.
Pectin and moisture help bind batters, but applesauce does not create the same protein structure as egg.
Mashed Banana
good1/4 cup per large egg
Adds sweetness and banana flavor. Best in muffins, pancakes, and quick breads.
Banana adds starch, sugar, and pectin, but not the same lift or set as egg protein.
Flax Egg
moderate1 tablespoon ground flax + 3 tablespoons water per large egg
Good binder for cookies, muffins, and hearty quick breads.
Hydrated flax forms a gel that binds, but it cannot foam or coagulate like egg.