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Home » Brownies & Bars » Zucchini Brownies

Zucchini Brownies

Published: Aug 18, 2020 · Modified: Nov 3, 2020 by Allison · 2 Comments

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Rich and moist Zucchini Brownies topped with a fudgy chocolate frosting. 

Two brownies on a white plate.

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.

Brownies topped with chocolate icing in a white pan.

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!

Ingredients in a white bowl for zucchini brownies.

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.

Stack of three brownies on a white plate.

Two brownies on a white plate.

Zucchini Brownies

Rich and moist Zucchini Brownies topped with a fudgy chocolate frosting. 
5 from 2 votes
Print Pin SaveSaved!
Course: Dessert
Cuisine: American, Dessert
Prep Time: 20 minutes
Cook Time: 25 minutes
Total Time: 45 minutes
Servings: 16
Calories: 321kcal
Author: Allison - Celebrating Sweets

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

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.

Nutrition

Calories: 321kcal | Carbohydrates: 46g | Protein: 3g | Fat: 15g | Saturated Fat: 10g | Cholesterol: 23mg | Sodium: 153mg | Potassium: 159mg | Fiber: 2g | Sugar: 30g | Vitamin A: 183IU | Vitamin C: 3mg | Calcium: 20mg | Iron: 2mg

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!
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Comments

  1. Taryn

    August 18, 2020 at 1:16 pm

    5 stars
    My kids had no idea these had zucchini! Hooray for hidden veggies. 🙂

    Reply
  2. Shadi Hasanzadenemati

    August 18, 2020 at 1:55 pm

    I’m making this for the weekend, everyone is going to devour it!

    Reply

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aboutHi, I'm Allison! I'm a busy wife and mom with a passion for cooking and baking. This is where you'll find my favorite homemade recipes, designed to help you make every day delicious! Read more....

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