Whether you're baking for a vegan friend, working around an allergy, or you've opened the cupboard to find no eggs at all, the right egg substitute for cake can save the afternoon and still give you a tender, well-risen crumb. The tricky bit is that no single swap works for every bake. Cookies want one thing, a Victoria sponge wants another, and brownies are a different beast again. We spent a long time in our own kitchen getting this right for our vegan range, so this guide walks through the substitutes worth knowing, the ratios that actually work, and the bakes each one suits best.
Why bakers reach for an egg substitute
There are three common reasons, and each one changes what you should prioritise.
The first is lifestyle or ethics. Vegan baking is thoroughly mainstream now, and plenty of us bake for friends and family who avoid animal products.
The second is allergy or intolerance. Egg allergy is one of the most common food allergies in young children, affecting around 2 in 100 children in the UK according to Allergy UK, and an egg-free birthday cake is a kind, inclusive thing to put on the table.
The third is entirely practical. You've started a recipe, and the box turned out to be one egg short.
What eggs actually do in a cake
Eggs are quietly doing several jobs at once. Knowing which one you need to replace makes choosing a substitute much easier.
Structure and binding. Egg proteins set when heated, holding the cake together so it doesn't crumble. In recipes built around two or three eggs, this is usually the most important job to replace.
Leavening and lift. Whisked eggs trap air, and that air expands in the oven to give a light, open crumb. Whole-egg sponges lean heavily on this. Substitutes that whip well, or that pair with extra raising agent, get you closest to the original texture.
Moisture and richness. Yolks bring fat and emulsifiers, which keep a cake tender and help fat and liquid combine. Without them a bake can taste slightly dry or oily, which is why most egg-free recipes add a little extra moisture or fat.
Hold those three jobs in mind as you read on. The trick is less about replacing the egg and more about replacing the job it was doing.
If you're baking for an egg allergy
This one matters, so it's worth saying plainly. An egg-free recipe is not the same thing as an egg-free kitchen.
If you're baking for someone with a diagnosed egg allergy, read the label on every ingredient rather than assuming, since egg turns up in places you wouldn't expect it, including some sprinkles, glazes and shop-bought icings. Use clean equipment and separate utensils, and be careful about anything made on a surface where eggs have been cracked. Above all, follow the advice of the person you're baking for, or their parent or clinician. They'll know their own situation far better than any recipe does, and if you're unsure about something, ask before you bake rather than after.
The best egg substitutes for cake
Here's a tour of the swaps worth keeping in your repertoire, in roughly the order most home bakers reach for them.
Flax egg
One tablespoon of ground flaxseed mixed with three tablespoons of water, left to thicken for five to ten minutes. One flax egg replaces one egg. Best for: chocolate cakes, brownies, banana bread, oat-based bakes, muffins and most cookies. The faintly nutty flavour disappears under cocoa and spice. Skip it for: very pale Victoria sponges, where the flecks can show, and anything relying on whisked egg whites for its lift.
Chia egg
The same ratio as a flax egg: one tablespoon of ground chia seeds with three tablespoons of water. Whole chia seeds work too if you don't mind a few specks. Chia is a touch milder than flax and sets a little firmer. Best for: heavier cakes, brownies and oat-bar style bakes. Skip it for: light sponges and anything meringue-based.
Aquafaba
The liquid from a tin of unsalted chickpeas. Three tablespoons replaces a whole egg, two tablespoons replaces an egg white. Whisked, it traps air much like egg whites do, which makes it the most useful swap for lighter bakes. Best for: vegan macarons, pavlova, mousse, and any sponge that wants extra lift. Skip it for: very rich, dense cakes, where the trapped air doesn't add much.
Mashed banana
About 60 grams of mashed ripe banana, which is roughly half a small banana, replaces one egg. Banana brings sweetness, moisture and a slightly denser crumb. Best for: banana bread, spiced loaf cakes, brownies, muffins and any bake where banana suits the flavour. Skip it for: vanilla sponges, lemon drizzles, or anything that doesn't want a banana note running through it.
Unsweetened apple sauce
60 to 85 grams, a quarter to a third of a cup, of unsweetened apple sauce per egg, ideally with a quarter teaspoon of baking powder alongside it for a little extra lift. Apple sauce keeps a cake moist and is almost flavour-neutral once baked. Best for: chocolate cakes, brownies, carrot cake and muffins. Skip it for: delicate sponges where you want maximum rise.
Silken tofu
60 grams of silken tofu, blended completely smooth, per egg. Silken tofu is high in water and protein, so it binds well and gives a rich, dense crumb. It adds no lift at all, so pair it with extra raising agent if the recipe needs height. Best for: chocolate cakes, brownies, baked cheesecakes and custards. Skip it for: light sponges, where the result will be heavy.
Commercial egg replacer
Powdered replacers based on starches and raising agents. In the UK the ones you'll actually find on a shelf are Orgran, Free & Easy and OGGS, the last of which is aquafaba-based. Follow the packet ratio, which is typically 1½ to 2 teaspoons of powder whisked with 2 to 3 tablespoons of water per egg. Best for: everyday vegan baking, all-purpose use, and recipes where you don't want any change in flavour or colour. Skip it for: anything that needs whipping into a meringue-style foam, unless you're using the aquafaba-based kind.
Vinegar and bicarbonate of soda
The classic wartime eggless-cake fix. One teaspoon of bicarbonate of soda with one tablespoon of white or cider vinegar replaces one egg. The fizz creates lift, but it only works in recipes already built around bicarb and acid. Best for: vegan chocolate cakes, single-layer cupcakes and simple loaf cakes with one or two eggs to replace. Skip it for: anything needing more than two eggs, since scaling up tips the bake towards a soapy taste.
Plain yoghurt
A quarter cup, around 60 grams, of plain yoghurt, dairy or plant-based, per egg. Yoghurt brings moisture, a gentle tang and a little protein for structure. Best for: muffins, loaf cakes, coffee cakes and bundt cakes. Skip it for: very light, high-rise sponges.
Egg substitute ratios at a glance
Worth printing out and tucking inside your recipe folder. Every row below replaces one egg.
| Substitute | Quantity per egg | Best for | Avoid in |
|---|---|---|---|
| Flax egg | 1 tbsp ground flaxseed + 3 tbsp water, rested 5 to 10 mins | Chocolate cake, brownies, cookies | Pale sponges |
| Chia egg | 1 tbsp ground chia + 3 tbsp water, rested 5 to 10 mins | Dense cakes, oat bars | Light sponges |
| Aquafaba | 3 tbsp whole egg, 2 tbsp egg white | Sponges, meringue-style bakes | Very dense bakes |
| Mashed banana | 60g, roughly half a small banana | Banana bread, spiced loaves | Vanilla and lemon sponges |
| Unsweetened apple sauce | 60 to 85g, plus ¼ tsp baking powder | Chocolate cake, carrot cake, muffins | High-rise sponges |
| Silken tofu | 60g, blended smooth | Brownies, baked cheesecake | Light sponges |
| Commercial egg replacer | 1½ to 2 tsp powder + 2 to 3 tbsp water | Everyday all-purpose baking | Meringue, unless aquafaba-based |
| Vinegar and bicarb | 1 tsp bicarbonate of soda + 1 tbsp vinegar | Vegan chocolate cake, cupcakes | Anything over two eggs |
| Plain yoghurt | 60g, dairy or plant-based | Muffins, loaf cakes, bundts | High-rise sponges |
Why vegan sponge recipes work differently
One thing worth clearing up, because it trips people up constantly. You'll see soured plant milk, which is soya or oat milk whisked with a tablespoon of lemon juice or vinegar and left to thicken, described as an egg substitute. It isn't one. It's a buttermilk substitute.
What's happening in a vegan sponge is that the acid reacts with the bicarbonate of soda in the recipe to create lift. The milk isn't standing in for the eggs at all. That's why the best vegan sponges aren't conventional recipes with the eggs swapped out, but recipes written from scratch around acid and raising agent. It's a genuinely different approach, and it's the reason a good vegan Victoria sponge tastes like a Victoria sponge rather than a compromise.
The practical upshot: if a recipe calls for three or more eggs, don't try to substitute your way through it. Find a recipe written as egg-free from the start.
How to choose the right substitute for your bake
Match the substitute to the bake, not to whatever's nearest in the cupboard.
Light sponges, so Victoria, vanilla and lemon drizzle. Aquafaba or a commercial egg replacer keep things light. Add a little extra raising agent to give the crumb a hand.
Chocolate cakes and brownies. Forgiving territory. Flax egg, chia egg, apple sauce, silken tofu and the vinegar-and-bicarb trick all work, and the cocoa covers any shift in flavour. For brownies specifically, silken tofu and apple sauce give that fudgy density people love.
Banana, carrot and spiced loaves. Mashed banana, apple sauce or yoghurt suit the flavour profile and add the moisture these cakes want anyway.
Cupcakes and muffins. Almost anything works. Pick by what you have in, and lean towards yoghurt or apple sauce for a tender crumb.
Celebration cakes. Start from a recipe written as egg-free rather than converting one, for the reasons above.
Egg substitutes for cookies, brownies and muffins
Cakes get most of the attention, but the rules shift slightly once you leave the tin.
Cookies need binding far more than lift, which makes them the easiest thing on this list to convert. A flax egg is the standard answer and works in almost any recipe. Expect a slightly softer, chewier result and a little less spread.
Brownies want density, not rise, so they're the most forgiving bake of all. Silken tofu, apple sauce or a flax egg all work. If anything, an egg-free brownie tends to come out fudgier than the original, which is rarely a complaint.
Muffins sit somewhere in between. Yoghurt or apple sauce with a quarter teaspoon of extra baking powder gives you the closest match to the original crumb.
Boxed cake mixes usually call for two eggs, which is right at the edge of what a substitute handles well. Apple sauce or a commercial replacer are your best bets, and add a little extra baking powder.
What you can't make without eggs
Worth knowing before you start, because no substitute rescues these.
A true meringue, a pavlova base, an angel food cake and a whisked genoise all get their entire structure from egg protein and trapped air. Aquafaba gets you closest, and a good aquafaba pavlova is a real thing, but it behaves differently and wants a recipe written specifically for it. Custards and curds set on egg yolk and won't thicken the same way with a substitute. Anything relying on an egg wash for colour will need plant milk or a little maple syrup brushed on instead, and the finish will be softer.
None of that is a reason not to bake. It's just a reason to pick a different recipe rather than fight the one in front of you.
Common mistakes when baking egg-free
A few avoidable slips trip up most first attempts.
- Replacing too many eggs at once. Most substitutes are excellent for one or two eggs. Replace four and the cake can turn gummy or refuse to rise. If a recipe calls for more than two, find one written as egg-free from the start.
- Forgetting the extra leavening. Many substitutes carry no lift of their own. Add a quarter teaspoon of baking powder per egg replaced if the recipe relied on whisked eggs for rise.
- Using sweetened apple sauce or flavoured yoghurt. Both throw the sugar balance and the flavour off. Always use unsweetened and plain.
- Underbaking. Egg-free cakes often look set on top before they're cooked through. Trust a skewer in the middle, not the colour of the surface.
- Skipping the fat. Without yolks a cake loses richness. A spoonful of oil, vegan butter or nut butter restores it.
How to store an egg-free cake
Much like any other cake, with one caveat. Egg-free bakes tend to be moister on day one and stale a touch faster afterwards, so they're at their best within two or three days in an airtight tin. If you've made more than you can get through, they freeze well, and our guide to freezing cake covers the wrapping and defrosting properly.
Frequently asked questions
What is the best all-round egg substitute for cake?
For most home baking, a flax egg or a commercial egg replacer. Flax is cheap and reliable in anything chocolatey or spiced, and a powdered replacer is the safest choice when you don't want any change in flavour or colour.
How many eggs can you replace in one recipe?
Two is the comfortable limit for most substitutes. Beyond that, texture suffers and you're better off with a recipe designed as egg-free.
Can you substitute just the egg white or just the yolk?
Yes. Two tablespoons of aquafaba stands in for one egg white. Yolks are harder, since you're replacing fat and emulsifiers rather than protein, so a tablespoon of silken tofu or a spoonful of oil plus a little extra liquid is the usual workaround.
Do egg-free cakes taste different?
A well-made one shouldn't. Flax and banana carry a flavour of their own, so use those where the bake can take it. Apple sauce, aquafaba and powdered replacers are close to neutral.
Is egg-free the same as vegan?
No. Egg-free means no eggs. Vegan means no eggs, dairy, honey or any other animal product. Every vegan cake is egg-free, but an egg-free cake can still contain butter or milk, which matters a great deal if you're baking for a dairy allergy too.
Egg-free cakes, delivered
If you'd rather someone else did the testing, that's rather the point of our egg-free cakes. The whole range is vegan, so it's free from eggs and dairy together, and it exists because we spent a long time tasting, testing and going back and forth until the recipes stopped tasting like second best. There's more on how that range came about in the story behind our vegan bakes.
For a party, the vegan birthday cakes are the ones to look at. For something smaller through the letterbox, try the egg-free brownies, and if wheat is off the menu as well, the vegan and wheat-free range covers both at once. Everything sits inside our wider vegan cakes and dairy-free cakes collections.
If you're ordering for an allergy rather than a preference, do check the allergen information on each product page, and get in touch if there's anything you'd like us to confirm before you order.
The bottom line
Egg-free cakes have come a long way, and the good ones are no longer a compromise. Work out which job the egg was doing, pick the substitute that does that job, keep it to two eggs or fewer, and add a little extra moisture or lift where the recipe asks for it. Do that and you can put a cake on the table that nobody thinks to ask about.
Short on time, or short on eggs? Our egg-free cakes are baked in London and delivered across the UK mainland, with cut-offs and delivery areas on our delivery options page.