Vegan Zucchini Brownies Recipe delivers ultra fudgy, chocolatey squares with shiny tops that no one guesses hide a pile of veggies. This recipe works well for busy home bakers who want a dairy free, egg free dessert on the table in about 45 minutes from start to finish. I tested these on my very picky neighbors in Brooklyn, and they asked for the recipe before they finished the second brownie.
Why Make This Vegan Zucchini Brownies Recipe at Home
Homemade vegan zucchini brownies taste richer and fresher than boxed mixes, and you control the sweetness, oil, and chocolate level. You also sneak in a full cup of zucchini, which keeps the brownies moist without any eggs or dairy.
You mix everything in one bowl, so cleanup stays easy, and the batter comes together in about 10 minutes. Kids, roommates, and skeptical partners usually eat these without noticing the veggies, which always makes me a little too proud.
“These vegan zucchini brownies taste like classic bakery brownies with a secret veggie upgrade, and I happily ate three in a row. ★★★★★”
Ingredients You Need
Dry ingredients
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All purpose flour, 1 cup
- Use regular unbleached flour for the best chewy texture.
- You can swap with a 1:1 gluten free baking blend if you want gluten free brownies.
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Unsweetened cocoa powder, 1/2 cup
- Use natural cocoa, not hot cocoa mix.
- I like Ghirardelli or Hershey’s Special Dark for deeper flavor.
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Granulated sugar, 3/4 cup
- Organic cane sugar keeps the recipe vegan friendly.
- You can use coconut sugar for a deeper, caramel like taste, though the brownies turn slightly less shiny.
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Brown sugar, 1/4 cup, packed
- Brown sugar adds moisture and a subtle molasses note.
- Light or dark both work; dark gives a stronger flavor.
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Baking powder, 1 teaspoon
- This gives a little lift without making the brownies cakey.
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Fine sea salt, 1/2 teaspoon
- Salt sharpens the chocolate flavor and balances sweetness.
Wet ingredients
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Shredded zucchini, 1 heaping cup, lightly packed
- Do not peel the zucchini; the skin disappears in the batter.
- Pat the zucchini with a towel to remove excess water, but do not squeeze it bone dry or the brownies turn dry.
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Neutral oil, 1/3 cup
- Use avocado, grapeseed, or light olive oil.
- Coconut oil works too; melt it and let it cool slightly before mixing.
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Dairy free milk, 1/4 cup
- Almond, oat, or soy milk all work.
- Choose unsweetened milk so you control the sugar level.
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Vanilla extract, 2 teaspoons
- Real vanilla gives better flavor than imitation.
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Dairy free chocolate chips, 1/2 to 3/4 cup
- I like Enjoy Life or Trader Joe’s vegan chips.
- Use mini chips if you want chocolate in every bite.
Optional add ins
- Chopped walnuts or pecans, 1/3 cup, for crunch
- Espresso powder, 1 teaspoon, to deepen chocolate flavor
- Flaky sea salt, for sprinkling on top after baking
Equipment list
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8 by 8 inch metal baking pan
- Metal pans bake more evenly and give better edges than glass.
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Parchment paper
- Line the pan so the brownies lift out easily.
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Large mixing bowl
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Whisk and rubber spatula
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Box grater for zucchini
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Measuring cups and spoons
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Cooling rack
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Sharp knife for clean slices
Tips & Mistakes
- Squeeze the zucchini gently, not aggressively, or the brownies turn dry instead of fudgy.
- Measure flour by spooning it into the cup and leveling it; packing flour tightly makes dense, tough brownies.
- Mix the batter just until no dry streaks remain; overmixing develops gluten and leads to chewy in a bad way.
- Use an 8 by 8 pan; a larger pan spreads the batter too thin and dries the brownies.
- Check early at 22 minutes; overbaking ruins fudgy texture, so pull them when the center still looks slightly soft.
- Let the brownies cool fully before slicing; cutting while hot causes crumbling and messy squares.
- Use good cocoa and real vanilla; low quality chocolate tastes flat and bitter.
- Avoid too many mix ins; more than 3/4 cup of chips and nuts together can keep the center from setting.
How to Make Vegan Zucchini Brownies Recipe
Step 1: Prep the pan and zucchini
Preheat your oven to 350°F and position a rack in the center. Line an 8 by 8 inch pan with parchment, leaving a little overhang on two sides so you can lift the brownies out later. Lightly grease the parchment and sides with a bit of oil.
Wash the zucchini, trim the ends, and grate it on the medium side of a box grater. Spread the shreds on a clean kitchen towel and pat them dry to remove surface moisture. Keep the zucchini slightly damp so it still adds moisture to the batter.
Step 2: Mix the dry ingredients
In a large mixing bowl, whisk together flour, cocoa powder, granulated sugar, brown sugar, baking powder, and salt. Break up any cocoa lumps so the batter mixes smoothly. Stir in espresso powder at this stage if you use it.
Step 3: Add wet ingredients and zucchini
Pour in the neutral oil, dairy free milk, and vanilla extract. Stir with a spatula until the mixture looks thick and glossy. Fold in the shredded zucchini and mix until it distributes evenly and you see no big clumps.
The batter will look thick and a little stiff at first. Let it sit for 3 to 4 minutes so the zucchini releases a bit of moisture. Stir again and watch the batter loosen into a scoopable, fudgy consistency.
Step 4: Add chocolate chips and optional nuts
Fold in the dairy free chocolate chips and nuts if you use them. Keep a small handful of chips aside to sprinkle on top. This step gives you melty pockets of chocolate and a nice top layer.
Step 5: Spread into pan
Scrape the batter into the prepared pan and spread it into an even layer. The batter will feel thick, so use the spatula to push it into the corners. Sprinkle the reserved chocolate chips over the top.
Step 6: Bake
Place the pan in the center of the oven and bake 22 to 28 minutes. Start checking at 22 minutes by inserting a toothpick near the center. You want a few moist crumbs clinging to the toothpick, not wet batter and not a totally clean stick.
The top should look set and slightly shiny, with tiny cracks around the edges. If the center still looks very jiggly, bake 2 to 3 minutes more and check again. Pull the pan once the edges look firm and the center just barely sets.
Step 7: Cool and slice
Set the pan on a cooling rack and let the brownies cool at least 45 minutes. Lift them out using the parchment overhang and transfer to a cutting board. Use a sharp knife to cut 9 large squares or 16 smaller ones.
If you want super clean edges, chill the brownies for 30 minutes before slicing. Wipe the knife between cuts to keep the squares neat. Sprinkle flaky sea salt on top right before serving if you like a sweet salty contrast.
Variations I've Tried
I swapped half the oil with almond butter and loved the nutty flavor and slightly denser texture. I also tried a version with chopped walnuts and a swirl of peanut butter on top, which tasted like a brownie peanut butter cup.
A double chocolate version uses mini chips in the batter and a thin layer of ganache style frosting made with melted vegan chocolate and a splash of oat milk. I also tested a gluten free batch with a 1:1 baking blend, and it baked up slightly more crumbly but still rich and fudgy.
How to Serve Vegan Zucchini Brownies Recipe
Serve these vegan zucchini brownies slightly warm with a scoop of dairy free vanilla ice cream or coconut milk ice cream. Add fresh berries on the side for a bright, juicy contrast to the deep chocolate flavor. Pack them in lunch boxes, picnic baskets, or snack boxes for an easy treat that travels well. I also like a square with hot coffee or a mug of oat milk hot chocolate in the afternoon.
How to store
- Store cooled brownies in an airtight container at room temperature for up to 3 days; place parchment between layers to prevent sticking.
- Keep brownies in the fridge for up to 6 days if your kitchen runs warm; let them sit at room temp 15 minutes before eating for the best texture.
- Freeze individual squares wrapped in plastic or parchment, then place them in a freezer bag for up to 2 months.
- Reheat from room temp or chilled in the microwave for 10 to 15 seconds, or warm from frozen for 25 to 30 seconds until soft and fudgy again.
Vegan Zucchini Brownies Recipe
Ingredients
Instructions
- Preheat the oven to 350°F and position a rack in the center. Line an 8 by 8 inch metal baking pan with parchment paper, leaving overhang on two sides to lift the brownies out later, and lightly grease the parchment and sides with a bit of oil.
- Wash the zucchini, trim the ends, and grate it on the medium side of a box grater. Spread the shreds on a clean kitchen towel and gently pat them dry to remove surface moisture, keeping the zucchini slightly damp so it still adds moisture to the batter.
- In a large mixing bowl, whisk together the flour, cocoa powder, granulated sugar, brown sugar, baking powder, and fine sea salt, breaking up any cocoa lumps so the batter mixes smoothly.
- If using espresso powder, whisk it into the dry ingredients at this stage.
- Pour the neutral oil, dairy free milk, and vanilla extract into the bowl with the dry ingredients. Stir with a spatula until the mixture looks thick and glossy.
- Fold in the shredded zucchini and mix until it is evenly distributed and no big clumps remain. The batter will look thick and slightly stiff at first.
- Let the batter rest for 3 to 4 minutes so the zucchini releases some moisture, then stir again. The batter should loosen into a scoopable, fudgy consistency.
- Fold in the dairy free chocolate chips and the chopped walnuts or pecans if using, reserving a small handful of chocolate chips to sprinkle on top of the batter.
- Scrape the batter into the prepared pan and spread it into an even layer, pushing it into the corners with a spatula. Sprinkle the reserved chocolate chips over the top.
- Bake in the center of the oven for 22 to 28 minutes. Start checking at 22 minutes by inserting a toothpick near the center; you want a few moist crumbs clinging to the toothpick, not wet batter and not a completely clean stick.
- The top should look set and slightly shiny with tiny cracks around the edges. If the center still looks very jiggly, bake for 2 to 3 minutes more and check again, pulling the pan once the edges are firm and the center just barely sets.
- Set the pan on a cooling rack and let the brownies cool for at least 45 minutes.
- Use the parchment overhang to lift the brownies out of the pan and transfer them to a cutting board. Use a sharp knife to cut into 9 large squares or 16 smaller squares.
- For extra clean edges, chill the brownies for about 30 minutes before slicing and wipe the knife between cuts. Sprinkle flaky sea salt on top just before serving if you like a sweet and salty contrast.
Notes
Approximate per serving (16 servings): 190 calories; fat 9 g; saturated fat 3 g; carbohydrates 28 g; fiber 2 g; sugars 19 g; protein 2 g; sodium 120 mg. Values are estimates and will vary based on brands, exact measurements, and optional add-ins like nuts or extra chocolate chips.
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