Zucchini Brownies and THE BEST Milk Chocolate Frosting

What’s the best way to eat the most prolific vegetable? In Zucchini Brownies and the Best Milk Chocolate Frosting! Try this crowd pleasing recipe today!

When summer zucchini piles up from your garden (or a generous neighbor’s), the Crafting Chicks reach for our go-to dessert: Zucchini Brownies with the best Milk Chocolate Frosting. This crowd-pleasing dessert smartly sneaks in vegetables without skimping on moisture, texture, or flavor. We adore making this for family gatherings, school potlucks, or cozy nights at home.

Why These Brownies Work

• Hidden veggies: Two cups of grated zucchini melt into the batter, adding natural moisture that keeps each bite rich and fudgy. 
• Pandemic-proof simplicity: Mix dry and wet ingredients straight into a mixing bowl, pour into a greased baking pan, and bake. No eggs, one bowl—total ease.
• Texture lovers’ dream: With a soft crumb, fudgy interior, and velvety frosting, this dessert offers more bite and depth than your average treat.

My husband swears these are his favorite brownies…but what he doesn’t realize is that it’s the frosting that he really loves! I seriously make these just for the frosting. I mean the brownies are okay, but it’s the frosting that makes them good.

But first, the brownies.

Do you have some zucchini laying around? If not I bet your neighbor does. It’s that time of year. We’ll need 2 cups grated, a box grater or food processor both work great, which I can get from a small-medium sized zuke. You can peel the skin off if it bothers you, but we don’t even notice it ones we’ve added it to the chocolate.

Tools & Prep You’ll Need

• A greased and floured . or use cooking spray, baking pan (we use a 9×13” or similar)
• Mixing spoon and mixing bowl
• Measuring cups/spoons
• Cheese grater (for zucchini)
• Saucepan and whisk for frosting
• Toothpick (to test doneness)

How to Make the Zucchini Brownies

1. Preheat oven to 350°F and grease your baking pan.
2. In a bowl, mix dry ingredients: flour, sugar, salt, baking soda, and cocoa.
3. Add zucchini, vegetable oil (½ cup), and vanilla (2 tsp). Stir until you see the zucchini bits start releasing moistureinto the mix.
4. Pour batter into your prepared pan and bake for 25 minutes—until the brownies pull away from the sides of the pan and a toothpick comes out clean.

Add the dry ingredients, flour mixture, to a large bowl, or mixer, and mix together.

Then add in the wet ingredients. Oil, zucchini, and vanilla. I’m not going to say these are healthy, BUT I have noticed that they use 1/4 the amount of oil that my zucchini bread recipe does and they have no eggs. So not healthy, but not as bad as other recipes out there.

Mix together. If the batter seems a little dry let it set for a few minutes, the zucchini will start to release water and it will be good. Pour into a sprayed 9×13″ pan and bake.

The Crafting Chicks

Zucchini Brownies and THE BEST Milk Chocolate Frosting

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Ingredients Method

Ingredients

  

• 2 cups all purpose flour
• 3 Tablespoons unsweetened cocoa powder
• 1 1/2 tsp. baking soda
• 1 1/4 c. sugar
• 1 teaspoon salt
• 2 c. shredded zucchini
• 1/2 cup vegetable oil
• 2 teaspoons vanilla

Method

 

1. Mix dry ingredients, then add wet ingredients. Mix well. Spread in a greased and floured 9 x13-inch pan. Bake at 350 for 25 minutes. Frost with milk chocolate frosting

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While the brownies are in the oven you can work on the frosting.

The frosting is cooked and you add it to the brownies while they and the frosting are warm. No waiting for things to cool around here!

This is the best chocolate frosting, I don’t know if it’s just because it’s cooked or if it is the evaporated milk that makes it taste so good. But it does. Like Christmas fudge good.

To start, melt butter and cocoa powder in a sauce pan. Once the butter is melted remove the pan from heat and mix in powdered sugar, evaporated milk and vanilla. Beat until it’s the right consistency. You’ll alternate adding the milk and powdered sugar, just remember we’re going for milk chocolate so you’ll want to add enough sugar to get it there.

Once the brownies come out of the oven pour frosting on top and spread. I only use half of the frosting on the pan of brownies, but save the rest in the fridge for our next pan. Or graham crackers. It is super good on graham crackers.

The BEST Milk Chocolate Frosting

While brownies bake, prepare the frosting:

• Melt 1 cube butter with 2 tbsp cocoa in a saucepan, bringing to a gentle boil. 
• Remove from heat, then stir in powdered sugar, evaporated milk (2 tbsp to start), and vanilla. Beat until smooth—adjusting the powdered sugar and milk until you reach a spreadable consistency.
• Once brownies are still warm, drizzle the frosting on top—no chilling required

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Serve with a scoop of vanilla icecream and watch your kids eat up the green vegetable they won’t touch on their dinner plate! My kids are fully aware that there is zucchini in here, but it’s so good they don’t care.

Why This Dessert Wins

• Perfect texture: Zucchini keeps the brownies fudgy and tender.
• Veggies disguised: Your family won’t guess there’s squash in this decadent treat.
• One-bowl efficiency: Just combine, pour, bake—cut down on dishes and stress.
• Warm frosting magic: Pouring warm frosting over warm brownies creates a delicious glossy top.

Baking Tips for a Better Batch

• Pan prep counts: Grease and flour the baking pan to prevent sticking.
• Toothpick test: Always check the center—when it comes out clean, you’re there.
• Let it cool: Allow brownies to sit for a few minutes before frosting—a warm-but-not-hot base keeps frosting shiny, not runny.
• Store wisely: Keep in an airtight container at room temperature for 2–3 days, or refrigerate (bring to room temp before serving).

Slice, Serve, Smile

Let brownies cool completely, then lift the sheet out of the pan, trim edges, and cut into squares. Place on a platter and serve with a side of milk or vanilla ice cream for a nostalgic twist. You’ll watch kids (and adults) devour one square—and then claim “I only had one!”

Why We Love These Brownies at Crafting Chicks

1. Moisture-loaded: Zucchini does double-duty by boosting enjoyment and raising fiber.
2. Texture-rich: Fudgy inside, lightly crisp edges, and creamy frosting all in one bite.
3. Family-friendly: It’s easy enough for teens to bake solo.
4. All-purpose dessert: Perfect for school bake sales, potlucks, or after-school treats.

Bonus Baking Pairing

After drizzling the frosting, let your brownies chill slightly so the top sets just right. Slice and pack them in an airtight container to bring along to parties—or leave them on the counter for weekend snack time. They taste even better the next day when flavors meld!

Final Slice

These Zucchini Brownies with Milk Chocolate Frosting are a shining example of sneaky-good baking. You get the perfect dessert texture, secret veggie moisture, and the BEST creamy frosting—all while keeping prep simple and cleanup minimal. Grab your baking pan, mix up that zucchini-packed batter, and treat yourself (and your family) to a slice of chocolaty deliciousness.

Cake lovers might never guess a veggie lives inside these brownies, but everyone will agree: they taste like magic.

Happy baking—and do tell me how many brownies disappeared from your airtight container stash!

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Pineapple Zucchini Sheet Cake

Chocolate Zucchini Cake

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