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    Home » Recipes » Dessert

    Zucchini Brownies with Fast Frosting

    July 31, 2020 | Updated March 22, 2021 | Heather Warburton

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    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases at no extra cost to you. Click HERE to read my policies.

    Use some of that garden zucchini and make these Zucchini Brownies with Fast Frosting. They're chocolaty, fudgy, and rich brownies filled with shredded zucchini and smothered in a delicious fast chocolate frosting.

    Summer is in full swing and so are the zucchini plants. Have you ever noticed how fast zucchini grows? It will be maybe 4 inches long and then in less than two days it's a foot long! I've learned to check the zucchini every day now. I always end up with so much zucchini every year. Which means I need a lot of recipes to use up all that zucchini. These brownies are the perfect recipe! They are incredibly easy to make and the frosting is done in 2 minutes. No joke! If you have an abundance of zucchini, make these brownies. Make a few extra batches of these brownies and share them with your friends, family, neighbors, basically everyone you know! They will thank you and you'll probably end up being their new favorite person, especially if they love chocolate!

    Zucchini Brownies with Fast Frosting close up view of brownie with cracked frosting.

    Zucchini Brownies with Fast Frosting Ingredients

    Zucchini Brownies

    • Salted Butter, melted
    • Sugar
    • Eggs
    • Unsweetened Cocoa Powder
    • Pure Vanilla Extract
    • Unbleached All Purpose Flour
    • Shredded Zucchini, skin on

    Fast Frosting

    • Milk
    • Salted Butter
    • Sugar
    • Dark Chocolate Chips

    What size zucchini is best to use in these brownies?

    You can use any size zucchini for this brownie recipe. Normally I use the larger ones in baked goods like these brownies, and quick breads, muffins, or even cakes. Larger zucchinis will have more water content in them which helps keep the baked goods nice and tender and not dry. I like to use the smaller zucchinis for sauteing, roasting, breading or making zoodles.

    What is the best way to shred a zucchini?

    I shred zucchini 2 different ways. If it is a small zucchini, I'll just use the box grater. Super simple, no need to peel or scoop out any seeds. If I have a large zucchini, and by large I mean a foot long or bigger, I'll use my Food Processor. I have the attachment blade that will shred and it works wonders. No need to peel the large zucchinis, but you will need to scoop out the seeds. They will be too big to shred. Usually when I have my food processor out I'll shred 3-4 zucchinis and freeze it all so I have shredded zucchini all winter long. Which means I can have these brownies all winter long too!

    A slice of Zucchini Brownies with Fast Frosting on round white plate with dish of brownies behind.

    How to Make Easy Zucchini Brownies with Quick Frosting

    This recipe is super simple. Gather all your ingredients, a large bowl, a medium sized saucepan, a couple whisks and spatulas.

    First, add the melted butter and cocoa powder to the bowl and whisk together until smooth. Next, add the sugar, eggs, and vanilla. Whisk until combined. Then whisk in the flour just until it is incorporated. Finally, fold in the shredded zucchini. This batter will be thick, which is exactly what you want for rich and fudgy brownies.

    Spread the brownie batter in a greased 9x13 baking dish and bake it for 25-30 minutes in a 350° preheated oven.

    Once the brownies are done, set them aside to start cooling. Now, start the fast frosting. Add the milk, butter and sugar to a saucepan and heat over medium heat. Constantly whisk the frosting gently until it comes to a rapid boil. Once it starts boiling, start timing while continuing to whisk. The frosting needs to boil for only 1 minute. Not a second longer. Remove from heat and whisk in chocolate chips until completely melted. Pour the frosting over the warm brownies. The frosting will harden fast so you need to pour around the brownies as evenly as possible. Let the brownies cool completely before serving.

    Can I freeze these brownies?

    Absolutely! Once the brownies are completely cooled you can slice them and put them in a freezer safe air tight container. If you need to layer them, use wax or parchment paper so they don't stick together. Or you can simply bake them in a disposable aluminum pan and freeze them right in that pan. Any way works!

    Looking for more ways to use up all that zucchini? Check out these other recipes I love!

    • Chocolate Zucchini Cake
    • Cheesy Zucchini Biscuits
    • Chocolate Zucchini Muffins
    • Oatmeal Zucchini Carrot Muffins
    • Healthier Double Chocolate Zucchini Muffins
    3 slices of Zucchini Brownies with Fast Frosting stacked on white round plate.

    Try these easy and delicious Zucchini Brownies with Fast Frosting and let me know how much you and your neighbors love them in the comments below! Pictures encouraged on Instagram with the hashtag #heathershomemadekitchen You can also follow me on Social Media to see what other crazy things my family and I are doing! If you like what you see, please share with your friends and family!

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    Zucchini Brownies with Fast Frosting top view and 3 slices stacked.
    Zucchini Brownies with Fast Frosting stacked 3 high front view.
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    Zucchini Brownies with Fast Frosting

    Use some of that garden zucchini and make these Zucchini Brownies with Fast Frosting. They're chocolaty, fudgy, and rich brownies filled with shredded zucchini and smothered in a delicious fast chocolate frosting. 
    Course: Dessert
    Keyword: Chocolate frosting, Zucchini Brownies with frosting
    Total Time: 1 hour
    Servings: 12 brownies
    Author: Heather

    Ingredients

    Zucchini Brownies

    • ½ cup salted butter, melted
    • ½ cup unsweetened cocoa powder
    • 1½ cups sugar
    • 2 large eggs
    • 1 teaspoon pure vanilla extract
    • 2 cups unbleached all purpose flour
    • 1 cup shredded zucchini, packed

    Fast Frosting

    • ½ cup milk
    • ¼ cup salted butter
    • 1½ cups sugar
    • 1 cup dark chocolate chips

    Instructions

    Zucchini Brownies

    • Preheat oven to 350° and grease a 9x13 baking dish.
    • In a large bowl, whisk together the melted butter and cocoa powder until smooth.
    • Next, whisk in the sugar, eggs and vanilla until completely combined.
    • Add the flour and whisk until it is just incorporated.
    • Fold in shredded zucchini.
    • Spread batter into prepared baking dish.
    • Bake brownies for 25-30 minutes.

    Fast Frosting

    • In a medium size saucepan, combine milk, butter and sugar.
    • Turn the heat to medium and bring the frosting to a boil, while constantly whisking.
    • Once the frosting is at a rapid boil, boil it for 1 minute only while still whisking. Set a timer!
    • Remove from heat and stir in chocolate chips until melted and smooth.
    • Pour the frosting over the warm brownies as evenly as possible.
    • Let brownies cool completely before serving.

    Nutrition

    Calories: 481kcal | Carbohydrates: 77g | Protein: 6g | Fat: 18g | Saturated Fat: 12g | Trans Fat: 1g | Cholesterol: 63mg | Sodium: 136mg | Potassium: 229mg | Fiber: 2g | Sugar: 56g | Vitamin A: 439IU | Vitamin C: 2mg | Calcium: 75mg | Iron: 2mg
    Tried this recipe?Please rate the recipe, leave a comment and tell me how much you loved it!
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