How to Replace the Eggs in a Box Brownie Mix
When you search for egg substitutes for boxed brownie mixes, the most common answers are: “Use flax, applesauce, or mashed banana.” My reaction to those suggestions is usually a firm, cringing “No, please don’t.”
Yes, pantry items like flax, applesauce, or banana can work, but are they the best options?
The short answer is no. While these swaps can technically bind and moisten the batter, they often change texture and flavor in ways that aren’t ideal for fudgy, boxed brownies. Instead, follow the approach below to replace eggs in a box brownie mix while preserving the texture and chocolate flavor you want.

I’ve been criticized for recommending a store-bought egg replacer.
Some readers preferred I continue to recommend quirky shortcuts like soda for veganizing boxed cakes and brownies. I understand the appeal of quick hacks, but I can’t endorse fixes that produce disappointing results.
I can’t recommend something just because it “works” technically if the end result is inferior.
If you want brownies that taste rich, fudgy, and chocolate-forward, avoid choices that make the texture cakey, gummy, or add odd flavors. Use a reliable egg replacer or a carefully made flax egg as detailed below.

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Notes for Success & Substitutions
In the original video I demonstrated using a product called The Plant Based Egg by Freely Vegan. That product is no longer available, and I regret how heavily I promoted it. Currently I recommend Bob’s Red Mill egg replacer in the same quantity, or a well-made flax egg as an effective alternative.
You can use any reputable egg replacer and still get excellent results, as long as you follow the other ingredient adjustments listed with the recipe.
Update (2023): Some brands, including Duncan Hines, have adjusted their boxed brownie formulas. If your results differ from what you expect, the formula change may be the reason and you might need to tweak the method.

For a deeper walkthrough, there is a full video tutorial available for visual learners.

How to Replace the Eggs in a Box Brownie Mix
Pin Recipe
10
30
40
Ingredients
-
1 Box Duncan Hines Fudge Brownie Mix
18.2 ounce box -
10
Tablespoons
water or brewed coffee
150ml -
1/3
cup
vegetable oil -
¼
teaspoon
baking powder -
2
Tablespoons
cocoa powder -
2
Tablespoons
sugar
14g -
All Purpose Flour ½ cup
62g -
2
teaspoons
Egg replacer of your choice - ½ Recipe Vegan ganache *optional
- Homemade Vegan Sprinkles *optional
Instructions
-
Sift all the dry ingredients together with the box mix.
-
Add the water (or brewed coffee) and vegetable oil, then mix until smooth.
-
Bake in a preheated 350°F oven following the box instructions for pan size and time. Watch closely since vegan or egg-free mixes can finish slightly sooner or later depending on your oven and the replacer used.
-
Cool brownies completely before spreading vegan ganache and decorating with vegan sprinkles, if desired.
Notes
For longer storage, refrigerate them for up to 9 days, wrapped tightly to retain moisture.
Tried this recipe?
Let us know how it was!