Replaces eggs in baking
Flax egg: how to make it and when it works
Quick answer
- 1 egg
- 1 tbsp ground flaxseed + 3 tbsp water
- Rest
- 5 to 10 minutes, until it gels
- Chia egg
- 1 tbsp chia seeds + 3 tbsp water, rested 5 to 10 minutes
- Job it does
- binds and adds moisture; it does not rise or whip
A flax egg is ground flaxseed stirred into water. After a few minutes it turns into a thick gel that binds a batter much like a beaten egg. It is cheap, it keeps, and it is the easiest egg swap for everyday baking.
Why it works
Flaxseed has a soluble fiber in its coat that swells in water and turns slippery and sticky. That gel holds crumbs together and keeps them moist. It cannot trap air, though, so it does nothing for rise. If your recipe needs lift, add a little extra baking powder or use baking soda with vinegar.
Flax or chia
| Flax egg | Chia egg | |
|---|---|---|
| Per egg | 1 tbsp ground flaxseed + 3 tbsp water | 1 tbsp chia seeds + 3 tbsp water |
| Rest | 5 to 10 min | 5 to 10 min |
| Taste | mild, nutty | very mild |
| Looks | brown flecks | dark specks (white chia hides them) |
Tips
- Grind a small batch at a time and keep it cold.
- Mix the flax egg first, then prepare the rest, so it has time to gel.
- For more than two eggs, or a cake that must be light, use aquafaba for part of the eggs.
How to make a flax egg
You need: 1 tbsp ground flaxseed, 3 tbsp water.
- Put 1 tablespoon of ground flaxseed in a small bowl. Grind whole seeds first in a spice grinder or blender.
- Stir in 3 tablespoons of water.
- Leave it for 5 to 10 minutes, until it turns thick and gel-like.
- Add it to the batter where the recipe adds the egg. For two eggs, double both amounts.
When it works and when it fails
Works well
- Muffins, quick breads, brownies, cookies and pancakes
- Veggie burgers, meatballs and fritters, where it holds the mix together
- Recipes with one or two eggs
Fails or disappoints
- It does not rise or whip, so it cannot replace whipped whites or meringue
- Weak where eggs are the structure: soufflé, angel food cake, custard
- It adds a nutty taste and brown flecks, which show in pale cakes
- Whole seeds do not gel; the seed coat has to be broken
Questions
What is the flax egg ratio?
1 tablespoon of ground flaxseed with 3 tablespoons of water replaces one egg.
Can I use whole flaxseeds?
No. Grind them first. The gel forms only when the seed coat is broken.
Is a chia egg the same?
It works the same way: 1 tablespoon of chia seeds with 3 tablespoons of water, rested 5 to 10 minutes. It leaves darker specks.
How do I store ground flaxseed?
Ground flax goes stale faster than whole seed. Keep it airtight in the fridge for about 1 to 3 months or in the freezer for 6 to 12 months, or grind it fresh.
Related swaps
- Replaces eggsEggsFlax, aquafaba, applesauce and seven more, matched to what the egg does in the recipe.
- Replaces egg whitesAquafaba3 tbsp per egg, 2 tbsp per white. Whips into meringue and binds cakes.
- Replaces buttermilkButtermilk1 cup plant milk + 1 tbsp lemon juice or vinegar, 5 to 10 minutes. Soy works best.
- Replaces butterButterVegan sticks one to one, coconut oil for pastry, oil for melted butter.
Sources
Ratios and temperatures were checked against these pages on 2026-10-10. Where they disagreed, we give the range.
- How to store flaxseed (Bob's Red Mill)
- Flax and chia eggs (Terrasoul)
- How to make a flax egg (Make It Dairy Free)
- Egg substitutes (Eggless Cooking)
- Storage stability of milled flaxseed (Flax Council of Canada)
Written with AI help, in our own words. Cooking advice, not health advice. Last checked 2026-10-10.