The most common egg replacements depend on what you're baking

The substitute you choose depends on whether you need eggs to bind ingredients together, add moisture, help things rise, or create structure. A flax egg works well in dense baked goods like brownies and muffins. Applesauce or mashed banana replaces eggs in cakes and quick breads where you want moisture. Aquafaba—the liquid from canned chickpeas—whips into meringues and mousses. Cornstarch mixed with water creates a binding agent for savory dishes. There is no single replacement that works everywhere, but most home bakers find one or two that cover their regular needs.

The amount you use also matters. Most recipes call for one egg as a baseline, and you'll measure your replacement by that single egg, not by the total number in the recipe. A standard large egg is roughly 50 milliliters or about 3.5 tablespoons of liquid and solids combined.

Key Takeaways

  • Flax eggs (ground flaxseed mixed with water) work best in dense baked goods like brownies, cookies, and muffins where binding is the main job.
  • Applesauce, mashed banana, and pumpkin puree add moisture to cakes, quick breads, and brownies but can make them denser than eggs would.
  • Aquafaba (chickpea liquid) is the only replacement that whips into stiff peaks for meringues, mousses, and fluffy cakes.
  • Cornstarch slurry and commercial egg replacers work as binders in savory dishes, pancakes, and some baked goods.
  • Most recipes need adjustment when you switch replacements—you may need to add extra leavening or reduce other liquids to get the texture right.

Flax eggs for structure and binding

A flax egg is one tablespoon of ground flaxseed mixed with three tablespoons of water, left to sit for 15 minutes until it thickens. It works because the flaxseed releases a gel that holds ingredients together the way egg protein does. Use flax eggs in brownies, cookies, muffins, pancakes, and any baked good where you want a sturdy crumb and don't need the batter to rise much.

Flax eggs do not work in recipes where eggs are the main ingredient—custards, meringues, or angel food cakes—because they won't create the light, airy texture those recipes need. They also add a slight nutty flavor that some people notice in delicate cakes but most won't detect in chocolate or spiced baked goods. If your recipe calls for more than two eggs, flax becomes less reliable as a sole replacement.

Applesauce and mashed fruit for moisture

Unsweetened applesauce, mashed banana, or pumpkin puree replaces eggs in recipes where moisture and tenderness matter more than rise. Use one-quarter cup of applesauce or mashed fruit for each egg. These work well in brownies, chocolate cakes, zucchini bread, and spice cakes. They keep baked goods moist for longer than eggs do, which is why many people prefer them for cakes that sit for a day or two.

The trade-off is density. Applesauce and banana make cakes slightly heavier and more compact than eggs would. If you're baking a light, fluffy layer cake, this replacement will disappoint. Banana also adds its own flavor, which works in banana bread and chocolate cake but not in vanilla or lemon cakes. Applesauce is more neutral. Reduce the other liquids in your recipe by two to three tablespoons per egg replaced, because applesauce and purees add liquid that eggs don't.

Aquafaba for whipped and airy baked goods

Aquafaba is the starchy liquid inside a can of chickpeas. Three tablespoons of aquafaba replaces one egg. It is the only egg replacement that whips into stiff peaks, which makes it essential for meringues, mousses, chiffon cakes, and any recipe that depends on whipped egg whites for lift. Aquafaba works because the starches and proteins in the liquid behave like egg white when you beat them with an electric mixer for five to eight minutes.

Use canned chickpeas, not dried ones you've cooked yourself—the liquid from canned chickpeas has the right consistency. Drain the liquid into a bowl and whip it when ready. You can store leftover aquafaba in the refrigerator for up to five days. Aquafaba has almost no flavor, so it works in any recipe. The main drawback is that it takes longer to whip than egg whites do, and the foam is slightly less stable, so use whipped aquafaba baked goods the same day you make them.

Cornstarch slurry and commercial replacers for binding

Mix one tablespoon of cornstarch with three tablespoons of water to replace one egg as a binder. Let it sit for a minute until it thickens slightly, then stir it into your batter. This works in pancakes, waffles, savory fritters, and any recipe where you need ingredients to hold together but don't need the batter to rise. Cornstarch slurry is neutral in flavor and inexpensive.

Commercial egg replacers like Bob's Red Mill Egg Replacer are powders you mix with water according to package directions. Most call for one-and-a-half teaspoons of powder mixed with three tablespoons of water per egg. These work as binders in most baked goods and are formulated to mimic eggs more closely than single-ingredient replacements do. They cost more than flax or cornstarch but are useful if you bake often and want one product that works across many recipes. Follow the package instructions, because different brands have different ratios.

How to adjust recipes when you switch replacements

Egg replacements change how your batter behaves, so you may need to adjust other ingredients. If your replacement adds liquid (applesauce, aquafaba, or a slurry), reduce the milk, water, or other liquid in the recipe by two to three tablespoons per egg replaced. If your replacement is dry (flax, commercial powder), you may need to add a little extra liquid so the batter isn't too thick.

Recipes that rely on eggs for rise—like sponge cakes or soufflés—often need extra leavening when you use a replacement. Add one-quarter teaspoon of baking soda or baking powder per egg replaced. Start with the smaller amount and add more if the baked good doesn't rise enough. Keep notes on what you change so you can repeat what works. The first time you use a replacement, bake a small batch—a single cake layer or half a dozen cookies—so you can see how it performs before you commit to a full recipe. Baking is more forgiving than people think, and most egg replacements work on the first try, but texture and rise vary by recipe.

When to test a replacement before baking for others

If you're baking for an event and the recipe is unfamiliar, or if you're making something that depends entirely on eggs—like a custard tart or a soufflé—consider testing the recipe with your chosen replacement well in advance. This gives you time to see how the replacement performs and make adjustments if needed. A failed test batch is much better than discovering a problem when you're baking for guests.

If you're baking for someone with a severe egg allergy, take extra care to avoid cross-contamination. Use clean bowls, utensils, and work surfaces, and check that your replacement ingredients haven't been processed in a facility that also handles eggs. If you're uncertain about safety or the recipe is complex, a baker who specializes in allergen-free baking can guide you through the process and help you understand which replacements are safest for that person's needs.

Frequently Asked Questions

Can I use oil or butter instead of eggs?

Oil and butter add fat and moisture but don't bind ingredients or help baked goods rise the way eggs do. You can use them alongside an egg replacement—for example, applesauce plus a little oil—but not as a complete replacement on their own. They work best in recipes that already call for a lot of fat, like brownies or pie crust.

What's the difference between aquafaba and egg white?

Aquafaba whips into peaks and adds lift, just like egg white, but it takes longer to whip and the foam is slightly less stable. The flavor is nearly identical. For most home bakers, aquafaba works just as well as egg white in meringues and mousses, though professional bakers may notice a small difference in texture.

Do egg replacements work in savory cooking?

Yes, but the choice depends on the dish. Cornstarch slurry and commercial egg replacers work as binders in meatballs, veggie burgers, and fritters. Aquafaba doesn't work in savory dishes because it's harder to whip and adds unwanted texture. Flax eggs work in savory pancakes and some baked goods but add a slight flavor some people notice.

Can I use mayonnaise as an egg replacement?

Mayonnaise is mostly oil and eggs, so it's not a true replacement—it still contains eggs. If you need to avoid eggs entirely, mayonnaise won't work. If you're looking for moisture and binding, a quarter cup of mayo can replace one egg in some recipes, but reduce other liquids because mayo is very wet.

What happens if I use the wrong replacement?

The worst outcome is usually a dense, dry, or flat baked good that you can still eat. If you use applesauce in a recipe that needs whipping (like a chiffon cake), it won't rise. If you use aquafaba in a dense brownie, it will work fine but you've wasted a replacement that's better suited elsewhere. Keep notes on what works and what doesn't, and you'll build your own guide over time.