Have you ever tried sneaking veggies into dessert and actually loved the result? I’m obsessed with these fudgy chocolate zucchini brownies that bring together the best of both worlds: rich chocolate and moist, hidden zucchini. These chocolate zucchini brownies are the perfect way to enjoy a decadent treat that feels just a little bit better for you.
The subtle addition of zucchini adds moisture without overpowering the chocolate flavor, creating a brownie that’s as fudgy as it is tender. Whether you’re a brownie purist or a vegetable skeptic, these will win you over bite by bite.

Why I Can’t Stop Making These Cookies
- Instantly fudgy texture that melts in your mouth
- Moisture-packed brownies with a sneaky veggie boost
- Uses pantry staples you likely have on hand
- A kid-friendly way to enjoy vegetables without any fuss
- Perfect for every season, especially when zucchini is fresh and abundant
What Type of Zucchini Should I Use?
For the best chocolate zucchini brownies, fresh zucchini is ideal. Look for firm, bright green squash without soft spots. If zucchini is in season, grab medium-sized ones around 6 to 8 inches long, as they are less watery and more flavorful. If you’re using frozen zucchini, thaw thoroughly and squeeze out excess moisture by wrapping it in a clean kitchen towel or paper towels to avoid soggy batter. Dried zucchini isn’t recommended here since it lacks the moisture that makes these brownies so luscious.
Options for Ingredient Alternatives
- Butter or neutral oil like vegetable oil can be used interchangeably; if substituting with solid coconut oil, chill the dough for 30 minutes before baking.
- Use semi-sweet chocolate chips for dark, milk, or even white chocolate, depending on your preference.
- Use dairy or plant-based milks such as almond, oat, or soy for a dairy-free treat.
- Vanilla extract can be replaced with almond or peppermint extracts for a twist.
- For extra texture or flavor, subtract some zucchini and add ½ cup dried cranberries or chopped nuts.
The Biggest Challenges While Baking
- Fold in zucchini and chocolate chips last and gently to avoid overmixing and tough brownies.
- Use softened butter rather than melted butter to create a balanced, tender crumb.
- Don’t overmix the batter; stop as soon as ingredients are incorporated for fudgy brownies.
- If the dough feels dry, add milk one tablespoon at a time until it reaches a slightly thick but scoopable consistency.
- Chill the dough for 30 minutes if using coconut oil or if you want cleaner brownie edges.
Storage & Freezing Instructions
Store cooled brownies in an airtight container at room temperature for up to 3 days or refrigerate for up to a week. To freeze, layer brownies between parchment or wax paper in a freezer-safe container and freeze for up to 3 months. Let thaw at room temperature before serving. You can also freeze the dough in a log, wrapped tightly, and thaw overnight in the fridge before slicing and baking fresh brownies.
Estimated Nutrition
This batch makes about 16 brownies. Rough totals: approximately 1600 calories, 90 g fat, 180 g carbohydrates, 20 g protein for the entire pan.
Per serving (1 brownie): roughly 100 calories, 6 g fat, 11 g carbs, and 1.3 g protein. These values will vary slightly depending on your choice of butter, chocolate, and milk substitutes.
Ingredients
- 1 cup granulated sugar (200 g)
- 1/2 cup unsalted butter, softened (115 g)
- 2 large eggs
- 1 1/2 tsp vanilla extract
- 1/2 tsp salt
- 1/2 tsp baking powder
- 1/2 cup unsweetened cocoa powder (50 g)
- 1 cup all-purpose flour (120 g)
- 1 1/2 cups grated zucchini, squeezed dry (about one medium zucchini, 150 g)
- 1 csemisweet chocolate chips (170 g)
- 2 Tbsp milk, only if dough is dry (optional)
Step-by-Step Instructions
- Preheat oven to 350°F (175°C). Grease or line an 8×8-inch (20×20 cm) square baking pan with parchment paper, leaving an overhang for easy removal.
- In a large bowl, cream together the softened butter and sugar until fluffy and light in color.
- Beat in the eggs one at a time, then stir in the vanilla extract until combined.
- In a separate bowl, whisk together the cocoa powder, salt, baking powder, and flour. Slowly add this dry mixture to the butter mixture, stirring just until combined. Do not overmix.
- Fold in the grated zucchini gently, making sure it’s well distributed but without breaking up too much. Then carefully fold in the chocolate chips last.
- If the batter feels too dry and crumbly, mix in milk one tablespoon at a time until you reach a thick but moist batter consistency.
- Spread the batter evenly into the prepared pan. Bake for 25–30 minutes until a toothpick inserted near the center comes out with a few moist crumbs (don’t overbake for max fudginess). Cool completely in the pan before slicing into squares.
Tips, Variations & Serving Ideas
- Add ½ cup chopped walnuts, pecans, or toasted hazelnuts for crunch.
- Sprinkle flaky sea salt on top before baking for a flavor boost.
- For extra gooey brownies, reduce baking time by 3-5 minutes.
- Serve warm with a scoop of vanilla ice cream or a drizzle of caramel sauce.
- Store leftover brownies wrapped in foil and reheat slightly to revive that fudgy texture.
- Try swapping in pumpkin puree or mashed sweet potato for a seasonal spin.
- Use mini chocolate chips or chopped baking chocolate for texture contrast.
FAQs
Can I use yellow squash instead of zucchini?
Yes, yellow squash works fine as it has a similar moisture content and mild flavor.
Do I need to peel the zucchini?
No, the skin adds color and nutrients, so wash and grate it.
Can I make these gluten-free?
Absolutely! Substitute all-purpose flour with a 1:1 gluten-free baking flour blend.
How do I know when the brownies are done?
The edges should look set, and a toothpick in the center should come out with moist crumbs, not wet batter.
Save This for Later (Pinterest)
Love fudgy, veggie-packed treats? Save this recipe for chocolate zucchini brownies to your Pinterest boards so you can find it anytime you want a decadent, delicious dessert that sneaks in a little green goodness! Sharing is caring. Pin it for your friends who need a healthier sweet fix.

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