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How to replace the eggs in a box brownie mix? Here are the 14 best substitutes for eggs in brownie mix, including some that are likely already in your pantry!

How to Replace the Eggs in a Box Brownie Mix

Learn how to replace the eggs in a box brownie mix with these 14 ingredients, most of which are likely already in your pantry!

Some of these box brownie egg substitutes might even surprise you but don’t knock them ’til you’ve tried them.

Besides knowing what to substitute for eggs in brownie mix, you’ll also know the recommended ratios to replace each egg in the recipe and what to expect with each alternative for eggs in brownies.

Which egg substitute will give you cake-like brownies? What should be used to replace eggs in brownies so they’ll still come out thick and fudgy?

So whether you forgot to grab a carton of eggs from your last grocery run, want to make vegan brownies from a box mix, or just looking for a way to enjoy delicious brownies even with an allergy or intolerance to eggs, this handy list got you. 

Best Egg Replacements For Box Brownie Mix

14 Best Egg Replacements For Box Brownie Mix

Egg replacer powder

Eggs bind the ingredients together so your brownies won’t crumble. As a leavening agent, eggs also help the batter rise beautifully.

So, if you want to make brownies without eggs, you’ll need a substitute like an egg replacer powder to become your binder and leavening agent.

How to Replace the Eggs in a Box Brownie Mix

How do you replace the eggs in a box brownie mix using this commercial powdered product?

Combine two tablespoons of water and a tablespoon of egg replacer powder to substitute one egg. Then, set aside for a few minutes to let the mixture thicken.

However, it’s worth noting that some people are not impressed with this substitute for eggs in brownie mix.

Some claim that their brownies turned out super oily, while others mentioned their brownies became very hard. 

So, if this is your first time using this replacement for eggs in brownies, try it with this box brownie mix, which is said to work nicely with egg replacers.


How to replace the eggs in a box brownie mix so the brownies will come out with a light and airy texture? Look for buttermilk!

This dairy product can become an alternative for eggs in brownies because, like eggs, it can act as a leavener to help the batter expand. 

However, there is one caveat: Use real buttermilk and not just milk combined with lemon juice. 

Some recipes recommend using 1/4 cup of buttermilk to replace one egg in a box brownie mix.


Another dairy substitute for eggs in brownie mix is yogurt, which I found to pair best with this double fudge box brownie mix. You’ll need ¼ cup of yogurt to replace one egg.

Greek yogurt is the perfect substitute for eggs in brownies because of its protein and fat content. So, even without eggs, the brownies will turn out nice and moist.

I also think this replacement for eggs in brownies will taste particularly heavenly with fruity brownies. Just imagine yogurt in these strawberry brownies! 🤤


Want to know how to replace the eggs in a box brownie mix using ingredients already in your pantry? Jot this down:

For every egg in the recipe, you’ll need a teaspoon of vegetable oil, two tablespoons of water, and two teaspoons of baking powder.

This mixture makes an excellent substitute for eggs in brownies, especially if the recipe calls for many eggs. Why?

Some egg substitutes can affect the flavor of the brownies if you use too much. (e.g., vegan eggs and fruit-based substitutes), Oil, on the other hand, tastes neutral.


If you don’t mind a nutty, earthy taste on your brownies, try flax egg as your box brownie egg substitute. Flax egg can also give the baked treat a denser texture!

To make brownie mix without eggs using flaxseeds, mix a tablespoon of ground flaxseeds with three tablespoons of water. 

Let the mixture rest for a few minutes. Once it’s thick, it’s ready to use. 

Chia seeds

What to substitute for egg in brownie mix besides flax egg?

This shouldn’t be a surprise, especially if you’re a fan of egg-free baking, but chia egg can also replace eggs in brownies.

To make one chia egg, combine a tablespoon of chia seeds with three tablespoons of water. But do you need to grind the seeds?

It’s up to you!

Just let the mixture sit for a few minutes until it thickens, like when making a flax egg.


Those who often make baked goods that call for egg white substitutes are probably familiar with aquafaba. But did you know it can be an incredible egg substitute for brownies?

Aquafaba is essentially the liquid in canned chickpeas. And don’t worry, you won’t end up with garbanzo brownies!

This unassuming liquid from canned chickpeas will bind the ingredients together and add moisture to the brownies.

You’ll need 3 tablespoons of aquafaba for every egg. However, it’s recommended that you reduce the oil in the box brownie recipe with this egg alternative. 

Nut butter

Love peanut butter and chocolate? I do! This is why peanut butter is my favorite substitute for eggs in brownie mix. 😋

For an eggless brownie recipe using peanut butter, you’ll need 3 tablespoons to make up for every egg in the recipe. 

And if you have extra pb, you can make these peanut butter balls with Rice Krispies!


As I mentioned earlier, this guide will teach you how to replace the eggs in a box brownie mix using common ingredients. However, I also said some egg replacements might surprise you. 

Can you guess our next egg substitute for brownie mix? Clue: It’s soy terrific!

It’s silken tofu, and it makes super moist brownies. 

You’ll need 1/4 cup of tofu to replace one egg in the box brownie mix. 

But if you’re still on the fence about using tofu for sweets, I totally understand.

Check out our chocolate mousse and pumpkin pie smoothie; they might just change your mind.


What to substitute for eggs in brownie mix that’s not too bizarre? 

Try unsweetened applesauce!

To replace eggs in brownies with applesauce, you’ll need 1/4 cup for every egg needed in the recipe. However, expect this replacement to impart some apple flavor to the brownies.

But is that a bad thing?

I think the finished treat will be like apple cinnamon brownies. Yum!

Mashed bananas

Chocolate and bananas? Yes, please!

Learn how to replace the eggs in a box brownie mix using mashed bananas and be rewarded with dense brownies with an irresistible choco-banana flavor. 

Mash half a banana to replace one egg in the box brownie recipe. This particular substitute works as the binder in the egg-free brownie batter.


If it’s zucchini season and you have extra squash left, forget about baking it.

Zucchini is actually an excellent egg substitute for brownie mix! The brownies will be deliciously moist, like this zucchini bread.

For every 18-ounce box of brownie mix, you’ll need a cup of pureed zucchini.


I want to know how to replace the eggs in a box brownie mix for convenience and practicality. If you’re the same, how about swapping eggs with soda for a two-ingredient brownie recipe?

Before someone else opens the remaining can of soda in your fridge, use it with a box of brownie mix instead!

This fizzy drink will substitute the eggs, oil, and water in the brownies. 

However, the result will be more cake-like, so for dense and fudgy brownies, choose from the other egg replacements in this list. 


If you love baking sweets at home, you’re probably familiar with mayonnaise being called chocolate cake’s best friend. This unlikely addition makes the finest and most irresistible chocolate cake! 

But can you use mayo instead of eggs in brownies?

Actually, yes! Mayonnaise can work as a box brownie egg substitute. And no, the brownies won’t taste like mayo. 

Mayo is essentially eggs and oil, so using it in place of eggs for box brownies will make them chewy, gooey, rich, and moist. All the things a brownie should be!

You’ll need 3 tablespoons of mayonnaise for each egg, but I also found recipes that use 1/4 cup of mayo to replace the egg and oil in a boxed brownie mix. 

How to Make Brownies Without Eggs

Can You Make Brownie Mix Without Eggs?

Yup! You can definitely make brownies with a no egg brownie mix. 

If you’ve already started the brownie mix recipe but can’t find eggs in the pantry, you can still proceed and just look for alternatives that you likely already have. Oil, soda, and mayonnaise are some shelf-stable egg substitutes that I think everyone readily has at home. 

But if you can’t tolerate eggs or want to make vegan brownies, you can always stock your kitchen with common egg substitutes for desserts: chia seeds and flax seeds.

How to Replace the Eggs in a Box Brownie Mix using flaxseeds

Tofu, zucchini, bananas, and applesauce are other vegan egg substitutes for brownies.

Just be aware of the recommended ratios and familiarize yourself with how they affect the final texture and taste of brownies.

Some will give you cake-like brownies, while others are perfect for fudgy brownies. 

And if ever you’re craving brownies but don’t want the hassle of using the oven, you’ll love these Instant Pot brownie bites.

How to Make Brownies Without Eggs

Okay, so now that I know how to replace the eggs in a box brownie mix, how do you actually use an egg substitute in a brownie recipe? 

For box brownies without eggs that don’t suck, meaning they’ll still be rich, moist, dense, and fudgy in the center but crinkly on top, I suggest preparing 2 tablespoons of ground chia seeds, 8 tablespoons of water and 2 tablespoons of peanut butter as your egg substitute for an 18-oz box brownie mix. 

Soften the pb in the microwave for about 20 seconds, then stir it into the chia egg (water and ground chia seeds mixture.)

How to Replace the Eggs in a Box Brownie Mix using chia seeds

The batter will also need 1/3 cup of vegetable oil, 2 tablespoons of water, and 1/4 teaspoon of baking powder.  The vegetable oil is reduced in eggless brownies so they won’t turn out too oily. 

The brownies will remain moist with less oil since the batter has peanut butter.

Combine the dry ingredients, add the vegetable oil, egg substitute, and water to form the brownie batter.

Pour the mixture into a lined baking pan, and bake in the oven preheated to 325°F for 30 minutes. Easy peasy!

Substitutes for Eggs in Brownie Mix

FAQ About Substitutes for Eggs in Brownie Mix

Can you skip the egg in brownie mix?

Yes, you can skip the egg in the brownie mix. But for the brownies to turn out moist, dense, and fudgy, you’ll need an egg replacement to bind the ingredients and leaven the mixture.

What happens if you skip eggs in brownie mix?

Without eggs in the brownie mix, the brownies will likely come out dry and crumbly. That is why you’ll need an egg substitute for eggless brownies to help with the moisture and texture of the baked goodies. 

Can I use oil instead of eggs?

Yes! Combine vegetable oil, baking powder, and water, and use this mixture as an egg substitute for moist and fudgy brownies. 

Why do brownies need eggs?

Brownies need eggs to rise beautifully. Eggs also help with the moisture, richness, and structure of brownies. Without eggs, you might end up with dry and flat brownies.

Why do brownies need eggs

Final Thoughts: How to Replace the Eggs in a Box Brownie Mix

And there you have it! You just learned how to replace the eggs in a box brownie mix using common pantry ingredients and vegan options for those with dietary restrictions.

Choose from egg replacer powders, buttermilk, yogurt, oil, flaxseeds, chia seeds, aquafaba, nut butter, tofu, applesauce, bananas, zucchini, soda, and mayonnaise.

boxed brownies without eggs

I know some of these substitutes for boxed brownies without eggs seem like they won’t belong in the chocolatey treats, but this might be your sign to go outside the box with your box brownie mix. 😉 

Just use the correct ratio and select the egg replacement that will give you your desired texture and taste on your brownies.

What are your favorite egg substitutes for brownies in this list? Perhaps you can try them in these heart-shaped brownies just in time for Valentine’s Day. And for more frequently asked questions, visit our index of food-related questions and answers. Here are a few suggestions for you:

One Comment

  1. OMG! Brownie with raspberry! I want to try this.

    Louisa, thank you sharing egg substitute ideas and the amazing pics!

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