Rich and moist Zucchini Brownies topped with a fudgy chocolate frosting.
Super fudgy Zucchini Brownies coming at ya! Whether you have an abundance of zucchini from your garden or you just want to sink your teeth into soft and delicious brownies, this recipe is here for YOU.
If you are a brownie fan (hello, friend) you have come to the right place. These Zucchini Brownies join my Homemade Brownies, Peanut Butter Brownies, Brownie in a Mug, Caramel Brownies, Pecan Pie Brownies, and Raspberry Brownies.
Am I brownie obsessed? Yep, and proud of it.
Recipe overview
Brownies: The base of this recipe is fudgy brownies filled with grated zucchini. The zucchini melts into the brownies, adding moisture and creating a texture that is somewhere between a soft chocolate cake and a brownie.
Fudgy chocolate frosting: The frosting that goes on top of these brownies is similar to a Texas Sheet Cake frosting. It is glossy, sweet, and loaded with chocolate. The frosting is poured over the pan of warm brownies. It will thicken as it cools, creating a fudgy flavor and texture to every bite!
Recipe tips
- You will need 2 (loosely packed) cups of grated zucchini. This is about 1 medium-large or 2 small-medium zucchini.
- Do not drain the grated zucchini. You actually want the moisture from the zucchini in the brownies.
- When you are making the brownie batter it will seem very dry and crumbly – that’s OK! Once you add the grated zucchini the moisture from the zucchini will pull it together.
- Serving: These brownies are best served at room temperature.
- Storing: After cooling to room temperature, store in the refrigerator for up to 3 days or freezer for up to 3 months.
Still have leftover zucchini? Try my Chocolate Zucchini Bread or Tortellini Pasta Salad.
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Recipe
Zucchini Brownies
Ingredients
Brownies:
- ½ cup vegetable or canola oil
- 1 cup granulated sugar
- 2 teaspoons pure vanilla extract
- 1 large egg
- 2 cups all purpose flour
- ½ cup unsweetened cocoa powder
- 1 teaspoon baking soda
- ½ teaspoon salt
- ¾ teaspoon instant espresso powder, optional
- ⅔ cup semisweet chocolate chips
- 2 cups grated zucchini
Chocolate frosting:
- 6 tablespoons unsalted butter , cut into pieces
- 3 tablespoons unsweetened cocoa powder
- 3 tablespoons milk
- ½ teaspoon pure vanilla extract
- 2 cups powdered sugar , sifted if lumpy
Instructions
Brownies:
- Preheat oven to 350°F. Grease a 9x13 baking pan.
- In a large bowl, whisk oil, sugar, vanilla, and egg until well combined.
- In a separate bowl, combine flour, cocoa powder, baking soda, salt, espresso powder and chocolate chips.
- Add the dry ingredients into the wet ingredients and stir with a rubber spatula or wooden spoon until combined. The mixture will be dry and thick.
- Using the medium holes of a box grater, grate the zucchini and measure out 2 loosely packed cups. Add the zucchini (without draining) to the chocolate mixture and give it a few stirs. Allow it to sit for 5 minutes. After 5 minutes the zucchini will have released some liquid and you should be able to stir the mixture into a thick batter. Once fully combined, scoop the batter into the prepared pan and smooth it into an even layer.
- Bake for 22-25 minutes, until a toothpick inserted into the center come out without raw batter on it (melted chocolate or fudgy crumbs are OK). During the last 5 minutes of bake time, begin the frosting.
Frosting:
- Melt the butter in a small saucepan over medium heat. Whisk in the cocoa powder, milk and vanilla. Remove from the heat and whisk in the powdered sugar. Whisk vigorously until the icing is glossy, smooth, and fully combined. Pour the frosting over the brownies immediately after removing them from the oven. Spread the frosting into an even layer (working quickly before it firms up). Place the pan on a wire rack to cool completely.
Notes
Nutrition
Nutritional Information is an estimate based on third-party calculations and may vary based on products used and serving sizes.
Tried this recipe?Leave a comment and rating below!
Taryn says
My kids had no idea these had zucchini! Hooray for hidden veggies. 🙂
Shadi Hasanzadenemati says
I’m making this for the weekend, everyone is going to devour it!
Kris says
Delicious! I even had a friend ask for the recipe. 😊
Allison says
I’m glad you enjoyed them. 🙂
Karen says
These are AMAZING. My kids won’t let a weekend pass by these brownies 😂. They’re super easy and delicious! I love it!! Thank you for sharing this recipe with us 🤗😘.
-Karen
Karen says
These are AMAZING. My kids won’t let a weekend pass by without these brownies 😂. They’re super easy and delicious! I love it!! Thank you for sharing this recipe with us 🤗😘.
-Karen
Allison says
You’re welcome! I’m glad you enjoyed them. 🙂
Rosa Teran says
This recipe is amazing!! So moist and delicious. The kids thought it was going to taste weird but to their surprise it was delicious!! So this is a keeper! Thank you !!
Allison Mattina says
You’re welcome! I’m glad you enjoyed it. 🙂
Cindy L Bettinger says
Delicious!
Susan B says
Just finished 3 batches. Decided to make with zucchini first instead of freezing raw to bake with later. On a scale of 1-10 this is a 12!
1-9×13, 3 mini loaves, 2 mini pie shaped, 1 reg loaf. Some to enjoy and many to share!
Allison Mattina says
I’m so glad you enjoyed this recipe! Thanks for taking the time to share your experience. 🙂