Name: Vegan Zucchini Brownies Recipe
Prep time: 20 min
Cook time: 30 min
Total time: 45 min
Ingredients: 1 cup all purpose flour; 1 cup granulated sugar; 1/2 cup unsweetened cocoa powder; 1 teaspoon baking powder; 1/2 teaspoon fine sea salt; 1/2 teaspoon instant espresso powder; 1/2 cup neutral oil (such as avocado, grapeseed, or light olive oil); 1/4 cup dairy free milk (oat, almond, soy, or cashew); 1 tablespoon ground flaxseed; 2 teaspoons vanilla extract; 1 1/2 cups finely grated zucchini, lightly packed; 1/2 to 3/4 cup dairy free chocolate chips or chunks; 1/3 cup chopped walnuts or pecans

Vegan Zucchini Brownies Recipe tastes ultra fudgy, rich, and chocolatey with crisp edges and a soft center, and nobody guesses they contain vegetables. This recipe works perfectly for busy families, beginner bakers, or anyone who wants a dairy free, egg free brownie in about 45 minutes total. I tested these on my very picky neighbors, and they now “forget” their containers at my house so I have to refill them.

Why Make This Vegan Zucchini Brownies Recipe at Home

Homemade vegan zucchini brownies taste fresher and richer than boxed mixes, and you control the sweetness and quality of chocolate. You also sneak in a nice amount of vegetables while everyone thinks they eat straight dessert.

You save money, avoid weird additives, and customize the texture from super fudgy to more cake like. You also enjoy that smug little moment when someone raves about the brownies and you casually mention the zucchini.

“These vegan zucchini brownies taste like bakery fudge brownies, and my kids asked for seconds before I told them about the veggies inside.” ★★★★★

Ingredients You Need

Here is everything you need for this Vegan Zucchini Brownies Recipe. I include easy swaps and pantry shortcuts so you use what you already have.

Dry ingredients

1 cup all purpose flour
- Use regular unbleached flour. Whole wheat pastry flour also works and gives a slightly heartier texture.
1 cup granulated sugar
- Organic cane sugar keeps the recipe vegan. Coconut sugar works, but it gives a deeper caramel flavor and slightly denser crumb.
1/2 cup unsweetened cocoa powder
- Use natural cocoa for classic flavor. Dutch process cocoa gives a darker color and richer taste.
1 teaspoon baking powder
1/2 teaspoon fine sea salt
1/2 teaspoon instant espresso powder (optional)
- This boosts chocolate flavor without a coffee taste.

Wet ingredients

1/2 cup neutral oil (such as avocado, grapeseed, or light olive oil)
- You can use melted coconut oil, but the brownies firm up more in the fridge.
1/4 cup dairy free milk (oat, almond, soy, or cashew)
1 tablespoon ground flaxseed
- This acts as an egg replacer and adds a little fiber. Chia seed also works.
2 teaspoons vanilla extract

Zucchini and mix ins

1 1/2 cups finely grated zucchini, lightly packed
- Do not peel the zucchini. The green flecks bake into the brownies and stay subtle.
- Small to medium zucchini works best because it tastes sweeter and contains fewer seeds.
1/2 to 3/4 cup dairy free chocolate chips or chunks
- I like Enjoy Life or Trader Joe’s vegan chocolate chips.
Optional: 1/3 cup chopped walnuts or pecans
- Nuts add crunch and balance the sweetness.

Equipment list

8 x 8 inch metal baking pan
- Metal browns the edges better than glass. If you use glass, reduce the oven temperature by 25°F.
Parchment paper
Two medium mixing bowls
Whisk and rubber spatula
Box grater or food processor with grating disc
Measuring cups and spoons
Cooling rack
Sharp knife for slicing

Tips & Mistakes

Squeeze the zucchini very gently; keep some moisture so the brownies stay fudgy.
Avoid overmixing the batter; stir just until the flour disappears to prevent tough brownies.
Use a metal pan for best texture; glass pans often give underbaked centers and overbaked edges.
Do not overbake; pull the brownies when a toothpick comes out with a few moist crumbs, not dry.
Measure flour by spooning it into the cup and leveling; scooping packs in extra flour and dries the brownies.
Let the brownies cool fully before slicing; warm brownies taste great but cut very messily.
Add chocolate chips on top right before baking; they melt into a glossy, bakery style finish.
Taste your cocoa powder; old cocoa loses flavor and makes the brownies taste flat.
Keep the batter fairly thick; if it looks runny, you likely squeezed too little water from the zucchini.
Line the pan with parchment with overhang; this makes lifting and slicing much easier.

How to Make Vegan Zucchini Brownies Recipe

Step 1: Prep the pan and oven

Preheat your oven to 350°F (175°C). Line an 8 x 8 inch pan with parchment paper, leaving some overhang on two sides so you lift the brownies out later. Lightly grease the exposed sides of the pan so nothing sticks.

Step 2: Grate and prep the zucchini

Wash and dry the zucchini. Grate it on the small holes of a box grater or use a food processor. Place the grated zucchini in a clean kitchen towel and gently squeeze out excess moisture until it feels damp but not dripping.

Measure 1 1/2 cups of the grated, squeezed zucchini and set it aside. If you have extra, save it for stir fries or another batch. Break up any clumps with your fingers so it folds into the batter evenly.

Step 3: Mix the flax “egg” and wet ingredients

In a medium bowl, whisk the ground flaxseed with the dairy free milk. Let it sit for about 5 minutes so it thickens slightly. Add the oil and vanilla extract and whisk until the mixture looks smooth and glossy.

Step 4: Combine the dry ingredients

In a separate large bowl, whisk together the flour, sugar, cocoa powder, baking powder, salt, and espresso powder if you use it. Break up any cocoa clumps with the whisk. This step helps distribute the leavening and cocoa so the brownies bake evenly.

Step 5: Bring the batter together

Pour the wet mixture into the dry ingredients. Stir with a spatula until you see no streaks of dry flour. The batter will look thick and glossy.

Fold in the grated zucchini until it spreads evenly through the batter. Add the chocolate chips and nuts if you use them and fold again. The batter will loosen slightly as the zucchini moisture blends in.

Step 6: Spread in the pan and top

Scrape the batter into the prepared pan. Smooth the top with the spatula so it reaches all corners. Sprinkle a few extra chocolate chips on top for a nice finish.

Step 7: Bake

Place the pan on the middle rack of the oven. Bake for 25 to 32 minutes, depending on your oven and how fudgy you like your brownies. Start checking at 24 minutes.

Insert a toothpick near the center. You want a few moist crumbs attached, not wet batter and not a completely clean toothpick. The brownies continue to set as they cool.

Step 8: Cool and slice

Set the pan on a cooling rack and let the brownies cool completely, about 1 to 1 1/2 hours. Lift the brownies out of the pan using the parchment overhang. Use a sharp knife to cut them into 9 large squares or 16 smaller ones, wiping the knife between cuts for clean edges.

Variations I've Tried

Extra fudgy peanut butter swirl
Drop small spoonfuls of peanut butter over the batter in the pan. Drag a knife through in a few lines to swirl. This adds richness and a sweet salty vibe.
Mocha zucchini brownies
Increase the espresso powder to 1 teaspoon and use strong brewed coffee instead of dairy free milk. This deepens the chocolate flavor and gives a subtle coffee note. Coffee lovers usually call dibs on these.
Gluten free version
Use a good quality 1 to 1 gluten free baking flour that includes xanthan gum. The texture stays fudgy and very close to the original. Let the gluten free version cool fully before slicing so it holds together.
Nut free school snack
Skip the nuts and use allergy friendly chocolate chips. Cut the brownies into small squares and pack them in lunch boxes. Kids just think they scored chocolate dessert, and you know they also ate zucchini.

How to Serve Vegan Zucchini Brownies Recipe

Serve these vegan zucchini brownies at room temperature for the best fudgy texture. Pair them with a cold glass of oat milk, almond milk, or regular dairy free milk of choice. You can also warm a brownie for 10 to 15 seconds in the microwave and top it with a scoop of vegan vanilla ice cream.

For a fun dessert board, cut the brownies into bite size squares and serve them with fresh berries and sliced bananas. They also work well as a base for a vegan brownie sundae with chocolate drizzle and chopped nuts.

How to store

Room temperature: Keep brownies in an airtight container at room temperature for up to 2 days. Place parchment between layers to prevent sticking.
Fridge: Store in an airtight container in the refrigerator for 4 to 5 days. The brownies firm up in the fridge, so let them sit at room temperature for 15 minutes before serving if you want a softer texture.
Freezer: Wrap individual brownies in plastic or parchment, then place them in a freezer bag or container. Freeze for up to 3 months.
Reheating: Reheat a brownie from the fridge or freezer in the microwave for 10 to 20 seconds until just warm. You can also warm them in a 300°F oven for about 5 to 8 minutes.