Tuesday, July 15, 2025 · 72 Comments

Chocolate Zucchini Cake (Orange Zest & Cream Cheese Frosting)

This chocolate zucchini cake gets its richness from cocoa and a little unexpected boost from fresh orange zest. With cream cheese frosting on top, it’s the kind of cake that surprises people in the best possible way.

The Chocolate Cake That Keeps a Secret

You can forget everything you think you know about baking with vegetables. This isn’t a cake pretending to be something else—it’s deeply chocolatey, extra moist, and packed with two full cups of shredded zucchini you’ll never notice. No green bits, no strange texture—just soft, rich cake with a secret.

The zucchini melts right into the batter, leaving behind all that moisture, which the cocoa and flour soak up like a sponge. What you’re left with is a tender, fudgy chocolate cake that tastes like dessert—not vegetables.

I add orange zest to highlight the cocoa flavor and finish it with a thick swipe of cream cheese frosting. It’s the cake to make when the zucchini starts piling up in the garden or at the market.

Why This Chocolate Zucchini Cake is the Best

This isn’t just another chocolate cake recipe. I’ve made sure this is the best chocolate zucchini cake recipe you’ll find, and it’s one of my favorite creations.

Unrivaled Moisture, Invisible Veggies
We can thank the zucchini for the cake’s incredible, almost fudgy moisture that lasts for days, with absolutely no noticeable vegetable taste or texture. It’s the ultimate secret ingredient.
The Orange Zest Twist
Chocolate and orange are one of my favorite combos. The orange zest adds an unexpected layer of flavor that complements the rich cocoa. It’s subtle yet unforgettable.
Rich, Deep Chocolate Flavor
This is a serious chocolate cake. I use enough cocoa to make sure the chocolate comes through and isn’t overwhelmed by anything else.
The Perfect Cream Cheese Frosting
My tangy-sweet cream cheese frosting balances out the richness of the cake and ties the whole thing together.
Foolproof & Forgiving
Even if you’re not a regular baker, this chocolate zucchini cake recipe is simple. The zucchini actually helps prevent overmixing, so the cake stays soft and doesn’t dry out.

The Ingredient We’re Here For: Zucchini’s Secret Role

Obviously the unsung hero of this chocolate cake is the zucchini. If you’re skeptical, I get it. But trust me, the zucchini is purely here for moisture. It has a very neutral flavor, and because it’s mostly water, it breaks down completely during baking. What’s left behind is an incredibly tender, moist cake layer, with no hint of green bits and no veggie taste whatsoever. It simply enhances the chocolate flavor by providing the perfect texture. So go ahead, grate that zucchini and turn it into the best summer cake.

Ingredients for This Indulgent Cake

Here’s your lineup for creating this indulgent chocolate zucchini cake:

All-purpose flour – Used in the cake to keep it sturdy without drying out.
Unsweetened cocoa powder – Goes in the cake for deep chocolate flavor.
Baking powder – Helps the cake rise.
Baking soda – Works with the baking powder to keep the cake soft.
Table salt – Balances the sweetness in the cake.
Ground cinnamon – Adds a warm note to the cake without turning it spicy.
Butter – Used in both the cake and frosting for richness and smooth texture.
Granulated sugar – Sweetens the cake just enough.
Large eggs – Help set the cake while keeping it soft.
Vanilla extract – Added to both the cake and frosting for a familiar background flavor.
Orange zest – Mixed into the cake batter to brighten the chocolate.
Whole milk – Loosens up the cake batter and adds moisture.
Zucchini – Goes in the cake for extra moisture with no trace of veggie flavor.
Walnuts – Folded into the cake for texture and a hint of bitterness.
Cream cheese – Forms the base of the frosting.
Confectioners’ sugar – Sweetens and smooths the frosting.

How to Bake the Best Chocolate Zucchini Cake (Step-by-Step)

Find the complete printable recipe with measurements in the recipe card at the BOTTOM OF THE POST.

Step One (prep the pans and dry mix)
Preheat your oven to 350°F (175°C). Grease and flour two 8-inch (20 cm) round cake pans. In a medium bowl, whisk together the flour, sifted cocoa, baking powder, baking soda, salt, and cinnamon.
Step Two (cream the butter and sugar)
Beat the softened butter and sugar together using a stand mixer or hand mixer until it’s light and fluffy—about 3 minutes.
Step Three (add eggs, vanilla, and zest)
Mix in the eggs one at a time, then stir in the vanilla and orange zest. It’ll start to smell amazing.
Step Four (alternate dry mix and milk)
Add the dry ingredients in thirds, alternating with the milk. Start and end with the dry, and mix on low until just combined.
Step Five (fold in zucchini and walnuts)
Use a spatula to gently fold in the shredded zucchini and chopped walnuts. The batter will be thick—that’s what you want.
Step Six (bake and cool)
Divide the batter between the pans and bake for about 35 minutes, or until a toothpick comes out clean. Cool in the pans for 5 minutes, then turn out onto wire racks to cool completely.
Step Seven (make the frosting)
Beat the cream cheese, softened butter, and vanilla until smooth. Add the sifted confectioners’ sugar and keep mixing on low until it’s thick and creamy.
Step Eight (frost and refrigerate)
Frost the cooled cakes and chill until ready to serve.

Pro Tips for the Best Chocolate Zucchini Cake

If you want your chocolate zucchini cake to turn out perfect every single time, here are my best chocolate zucchini cake tips—plus a few zucchini cake hacks I’ve learned along the way.

Don’t squeeze the zucchini. For this moist chocolate cake, the liquid from the zucchini is exactly what you want. It’s what gives the cake that almost fudgy texture.
Leave the peel on. No need to peel before shredding. The skin blends right in and brings extra moisture without affecting flavor or appearance.
Fine shred is key. Use a box grater or food processor. I like to chop it down a little more after grating to help it disappear into the batter.
Room temp makes a difference. Butter, eggs, and cream cheese all mix better at room temperature. It keeps the cake light and helps the frosting come together without lumps.
Don’t skip the orange zest. That little bit of citrus cuts through the richness and brings out the chocolate flavor. It’s one of my non-negotiables.
I’ve also played with tea and chocolate together in my Earl Grey chocolate pound cake, which has a different flavor vibe but the same kind of balance.
Walnuts or pecans—your call. I like walnuts for the way they contrast the chocolate, but pecans work too if that’s more your thing.
Cream cheese frosting belongs here. The cake itself isn’t super sweet, which is exactly why the tangy frosting works so well with it.
Get everything prepped first. Have your ingredients measured and ready before you start. It makes the whole thing easier and faster.
Use a 9×13 if you want. You can bake this in a 9×13-inch pan instead of doing layers. Bump the oven temp to 375°F (190°C) and bake for about 26–30 minutes.
Don’t stress about overmixing. The zucchini helps keep the batter forgiving. Even if you mix a little more than you meant to, it still turns out moist.

Storage, Freezing & Serving Your Chocolate Zucchini Cake

You’ll want to savor every last slice of this chocolate zucchini cake. Here’s how to store it, freeze it, and serve it for the best flavor and texture.

Storage (Refrigerated):
To store chocolate zucchini cake with cream cheese frosting, keep it in the fridge. Use an airtight container or wrap it tightly in plastic wrap to keep it from drying out. It stays moist for 3 to 4 days.
Freezing Cake Layers (Unfrosted):
Freezing chocolate zucchini cake is easy if you do it before frosting. Let the layers cool completely, then wrap each one tightly in plastic wrap followed by aluminum foil. They’ll keep for up to three months. Thaw in the fridge overnight before adding frosting.
Freezing Frosted Cake:
You can also freeze the whole frosted cake. Place it in the freezer uncovered for an hour until the frosting firms up, then wrap it in plastic wrap and foil. Thaw overnight in the refrigerator.
Optimal Serving Temperature:
To serve chocolate zucchini cake at its best, take it out of the fridge 1 to 2 hours before serving. The frosting softens up and the cake loses its chill, which makes the chocolate and orange flavors pop.

Chocolate Zucchini Cake FAQs

Can you taste the zucchini in this chocolate cake?
Absolutely not. The zucchini completely disappears during baking. Its only job is to add moisture and tenderness—there’s no grassy flavor, no strange texture, and definitely no green bits.
Why add orange zest to a chocolate zucchini cake?
The orange zest is what really makes this cake stand out. It adds a subtle citrusy flavor that goes so well with the cocoa.
Do I have to sift the cocoa powder and confectioners’ sugar?
Yes, I recommend it. Sifting cocoa for cake batter keeps the chocolate smooth and lump-free, and sifting the confectioners’ sugar makes the frosting extra creamy. It’s a small step that makes a noticeable difference.
Can I omit the walnuts?
Yes, you can leave them out if you prefer a nut-free cake. You’ll miss a little texture contrast, but the cake will still be soft, rich, and moist.
What’s the best way to shred zucchini for cake?
Use a box grater or a food processor with the shredding disc. I usually give the shreds an extra chop afterward so the pieces blend right into the batter.
Why use cream cheese frosting?
It balances everything out. The cake isn’t overly sweet, so the tangy frosting ties it together without feeling like too much. It’s the right match for this kind of chocolate cake.
If you’re after something more classic and straightforward, my old-fashioned chocolate cake goes all in on cocoa and nostalgia—no zucchini, just pure chocolate comfort.
Can I bake this cake in a 9×13 instead of layers?
Yes—this easy chocolate zucchini cake recipe works great in a 9×13-inch (23×33 cm) pan. Increase the oven temp to 375°F (190°C) and bake for 26–30 minutes.
How does this compare to other easy chocolate zucchini cake recipes?
This version stands out for two reasons: the orange zest and the cream cheese frosting. The flavor is richer, the cake stays moist for days, and it doesn’t rely on oil or boxed mix shortcuts.

More Ways to Bake with Zucchini

If you’ve got extra zucchini on the counter, here are a few more ways I like to put it to use:

Zucchini Pistachio Cupcakes – A lightly spiced dessert topped with zingy lime icing and crunchy pistachios.
Honey Zucchini Bread – Moist from shredded zucchini and sweetened with honey, then finished with a simple icing.
Zucchini-Nut-Bread Cookie Sandwiches – Soft, cinnamon-spiced cookies filled with tangy cream cheese frosting.
Bisquick Zucchini Pie – A savory bake with a buttermilk biscuit crust loaded with vegetables and cheese.

Final Thoughts on This Chocolate Zucchini Cake

The facts are, unbeatable moisture, subtle orange zest, and rich cream cheese frosting. My chocolate zucchini cake genuinely delivers on its promise of deliciousness without the detectable veggies. Give it a try—your sweet tooth (and maybe even your garden) will thank you.

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chocolate zucchini cake with cream cheese frosting and orange zest

Print Recipe

5 from 2 votes

Chocolate Zucchini Cake (Orange Zest & Cream Cheese Frosting)

This chocolate zucchini cake is rich, moist, and full of cocoa flavor with no trace of veggies. A touch of orange zest adds something special, and the cream cheese frosting ties it all together. Bakes beautifully as a layer cake or in a 9x13 pan.

Prep Time25

Cook Time35

Cooling + Frosting:1

Total Time2

Course: Dessert

Cuisine: American

Keyword: best chocolate zucchini cake recipe, Chocolate Zucchini Cake, chocolate zucchini cake orange zest, chocolate zucchini cake with cream cheese frosting, easy chocolate zucchini cake, moist chocolate zucchini cake, zucchini chocolate cake

Servings: slices

Calories: 530kcal

Author: Cathy Pollak

Equipment

measuring cups and spoons For accuracy.
mixing bowls For dry and wet ingredients.
2 baking pans 8" (round) (20 cm) For baking the layered version.
Stand Mixer or hand mixer. To combine ingredients.
box grater or food processor. To shred the zucchini.

Ingredients

Cake:

2½ cups (313 g) all-purpose flour
½ cup (43 g) unsweetened cocoa powder sifted
2½ tsps (10 g) baking powder
1½ tsps (7 g) baking soda
1 tsp (6 g) table salt
1 tsp (2.6 g) ground cinnamon
¾ cup (170 g) butter softened
1½ cups (300 g) granulated sugar
3 large (150 g) eggs room temperature
2 tsps (10 ml) vanilla extract
zest of one orange
½ cup (120 ml) whole milk room temperature
2 cups (~ 260 g) shredded or grated zucchini
1 cup (120 g) chopped walnuts

Frosting:

2 (8 oz packages - 454 g) cream cheese room temperature
½ cup (113 g) butter softened
1 tsp (5 ml) vanilla extract
2 cups (240 g) confectioners' sugar sifted

Instructions

Preheat the oven to 350°F (175°C). Grease and flour two 8-inch (20 cm) round cake pans and set them aside.
In a medium bowl, whisk together the flour, sifted cocoa powder, baking powder, baking soda, salt, and cinnamon.
2½ cups (313 g) all-purpose flour, ½ cup (43 g) unsweetened cocoa powder, 2½ tsps (10 g) baking powder, 1½ tsps (7 g) baking soda, 1 tsp (6 g) table salt, 1 tsp (2.6 g) ground cinnamon
Using a stand mixer or hand mixer, cream the butter and sugar until light and fluffy, about 3 minutes.
¾ cup (170 g) butter, 1½ cups (300 g) granulated sugar
Add the eggs one at a time, mixing after each addition. Stir in the vanilla extract and orange zest.
3 large (150 g) eggs , 2 tsps (10 ml) vanilla extract, zest of one orange
Add the dry ingredients in thirds, alternating with the milk—beginning and ending with the dry. Mix on low speed just until combined.
½ cup (120 ml) whole milk
Fold in the shredded zucchini and chopped walnuts using a spatula.
2 cups (~ 260 g) shredded or grated zucchini , 1 cup (120 g) chopped walnuts
Divide the batter evenly between the pans and bake for 35 minutes, or until a toothpick inserted in the center comes out clean.
Cool the cakes in the pans for 5 minutes, then transfer to wire racks to cool completely.
In a large bowl, beat the cream cheese, softened butter, and vanilla extract until smooth.
2 (8 oz packages - 454 g) cream cheese, ½ cup (113 g) butter, 1 tsp (5 ml) vanilla extract
Add the sifted confectioners’ sugar and continue mixing on low speed until fully combined and creamy.
2 cups (240 g) confectioners' sugar
Frost the cooled cakes and refrigerate until ready to serve.

Video

Notes

For a 9x13-inch (23x33 cm) version of this cake, increase the oven temperature to 375°F (190°C) and bake for 26–30 minutes, checking with a toothpick for doneness.
No need to peel or squeeze the zucchini—use it as is.
Cake layers can be made ahead and frozen, then thawed and frosted later.

For optimal outcomes when making this chocolate zucchini cake, I recommend referring to the details within the post. The recipe post commonly includes valuable notes, expert tips and frequently asked questions, that are not presented in the recipe card, often including how to make this recipe dairy-free, gluten free or vegan and ideas for healthy ingredient substitutions or variations.

The provided nutrition information is merely an approximation, as variations can arise depending on the specific ingredients/brands you select.

© noblepig.com. All content and photographs are copyright protected. Sharing this recipe is encouraged and appreciated, but copying and/or pasting the full recipe to social media or other platforms is strictly prohibited.

Nutrition

Nutrition Facts

Chocolate Zucchini Cake (Orange Zest & Cream Cheese Frosting)

Amount Per Serving (165 g)

Calories 530 Calories from Fat 297

% Daily Value*

Fat 33g51%

Saturated Fat 16g100%

Polyunsaturated Fat 4g

Monounsaturated Fat 10g

Cholesterol 105mg35%

Sodium 430mg19%

Potassium 280mg8%

Carbohydrates 52g17%

Fiber 3g13%

Sugar 36g40%

Protein 6g12%

Vitamin A 1120IU22%

Vitamin C 2mg2%

Calcium 110mg11%

Iron 3mg17%

* Percent Daily Values are based on a 2000 calorie diet.

Have you made this Chocolate Zucchini Cake? I’d love to hear how it turned out — leave a comment below and let me know.

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Comments

5 from 2 votes