If you’ve been hunting for a dessert that’s not only decadently chocolatey but also sneaks in some wholesome veggies and fruit, your search ends here with this Chocolate Zucchini Banana Cake Recipe. Imagine a moist, tender cake bursting with banana sweetness, the subtle earthiness of zucchini, and rich cocoa flavor that melts in your mouth. This cake is an absolute crowd-pleaser and a terrific way to enjoy a slice of indulgence that feels a little bit guilt-free. Whether you’re baking for family, friends, or just treating yourself, this recipe promises a delightful experience from start to finish.

Ingredients You’ll Need
Keeping this cake simple is part of its charm. Each ingredient plays a critical role in building layers of flavor, moisture, and that perfect texture we all crave. Let’s walk through these essentials that make the magic happen.
- 1 cup mashed ripe banana: Provides natural sweetness and moisture, ensuring the cake stays tender.
- 1 cup shredded zucchini: Adds subtle earthiness and extra moisture without overpowering taste—make sure to squeeze out excess liquid.
- 2 large eggs: Act as a binder while contributing richness to the batter.
- 1/2 cup vegetable oil: Keeps the cake soft and moist for days.
- 1/2 cup brown sugar: Gives a deep, caramel-like sweetness.
- 1/4 cup granulated sugar: Balances sweetness and helps with structure.
- 1 teaspoon vanilla extract: Adds warmth and enhances the chocolate and banana flavors.
- 1 cup all-purpose flour: The main structure builder of the cake.
- 1/2 cup unsweetened cocoa powder: Delivers that rich chocolate flavor we love.
- 1 teaspoon baking soda: Helps the cake rise beautifully.
- 1/2 teaspoon baking powder: Provides extra lift for a light texture.
- 1/2 teaspoon salt: Balances sweetness and enhances all the flavors.
- 1 teaspoon ground cinnamon: Adds a subtle warm spice, complementing the chocolate perfectly.
- 1/2 cup semi-sweet chocolate chips: Little pockets of melty chocolate throughout the cake—never enough!
How to Make Chocolate Zucchini Banana Cake Recipe
Step 1: Prepare Your Pan and Oven
Start by preheating your oven to 350 degrees Fahrenheit (175 Celsius). Lightly grease an 8×8-inch pan or line it with parchment paper so your cake comes out easily and the edges don’t stick. Having your oven at the right temperature ensures even baking throughout.
Step 2: Mix the Wet Ingredients
In a large mixing bowl, whisk together your mashed bananas, shredded zucchini, eggs, vegetable oil, both sugars, and vanilla extract. Take a moment to appreciate the smooth, wholesome mixture you’re creating—it’s the foundation of your cake’s delightful texture and sweetness.
Step 3: Combine the Dry Ingredients
In a separate bowl, sift together the flour, cocoa powder, baking soda, baking powder, salt, and cinnamon. Sifting helps avoid any lumps, ensuring a silky batter that bakes evenly. The spices and cocoa powder meld beautifully here, building those rich, layered flavors.
Step 4: Bring Wet and Dry Together
Gradually stir the dry ingredients into the wet mixture, mixing just until everything comes together. Over-mixing can make the cake tough, so patience and a gentle hand will pay off. Once the batter has a uniform color, it’s time for the next delicious step.
Step 5: Fold in Chocolate Chips
Gently fold half a cup of semi-sweet chocolate chips into the batter. These little gems will melt into pockets of gooey chocolate as the cake bakes, making every bite a treat.
Step 6: Bake the Cake
Pour the batter into the prepared pan, spreading it evenly. Pop it into the oven and bake for 35 to 40 minutes. You’ll know it’s ready when a toothpick inserted in the center comes out with just a few moist crumbs clinging to it—no wet batter, but still tender.
Step 7: Cool and Add Optional Toppings
Once out of the oven, let your cake cool completely in the pan before slicing. For an extra touch of indulgence, sprinkle some additional chocolate chips on top or dust with powdered sugar before serving.
How to Serve Chocolate Zucchini Banana Cake Recipe

Garnishes
A simple dusting of powdered sugar or a handful more chocolate chips adds charm and a slight crunch that beautifully contrasts the soft crumb of the cake. Fresh berries or a dollop of whipped cream also bring a refreshing balance to the rich chocolate and banana flavors.
Side Dishes
This cake pairs beautifully with a scoop of vanilla ice cream or a cup of creamy coffee or tea. The cold creaminess or warmth of a drink highlights the cake’s moist texture and deep cocoa notes, making every bite and sip one to savor.
Creative Ways to Present
Try serving this cake as mini squares stacked into a dessert tower for a party or drizzle a bit of chocolate ganache for an elegant touch. You can even cut it into rounds and sandwich with cream cheese frosting to turn it into a festive mini cake—versatility that’s sure to impress!
Make Ahead and Storage
Storing Leftovers
Keep leftover cake fresh by storing it in an airtight container at room temperature for up to three days. To extend freshness, refrigeration works well too but may dry the cake slightly, so bringing it back to room temperature before serving is recommended.
Freezing
This Chocolate Zucchini Banana Cake Recipe freezes beautifully. Wrap individual slices tightly in plastic wrap and place them in a freezer-safe bag or container. Frozen cake lasts up to three months—perfect for prepping ahead or saving treats for later.
Reheating
To enjoy the cake warm, simply microwave a slice for about 15 seconds or warm it gently in a toaster oven. The cake’s natural moistness ensures it stays soft and irresistible upon reheating.
FAQs
Can I use other types of chocolate instead of semi-sweet chips?
Absolutely! Feel free to experiment with dark chocolate, milk chocolate, or even white chocolate chips based on your sweetness preference and flavor mood. Each variety will give the cake a unique twist.
Do I need to peel the zucchini before shredding?
No need to peel the zucchini. The skin adds color, nutrients, and texture without overpowering the cake, especially since it’s finely shredded.
Is it necessary to squeeze out the zucchini moisture?
Yes, squeezing out excess moisture is crucial. Too much liquid can make the cake soggy and prevent it from baking properly, so a good squeeze helps maintain the ideal texture.
Can I substitute whole wheat flour for all-purpose?
You can, but keep in mind that whole wheat flour will make the cake denser and add a nuttier flavor. You might want to use half whole wheat and half all-purpose flour to keep that perfect balance of tenderness and structure.
Will this cake work as a loaf instead of in a pan?
Definitely! Baking it in a loaf pan will yield more of a banana bread texture. Just keep an eye on the baking time, as it might need a little longer to cook through.
Final Thoughts
If you’re looking for a dessert that checks all the boxes—moist, rich, comforting, and with a hint of wholesome ingredients—this Chocolate Zucchini Banana Cake Recipe is your new go-to. It’s a fantastic crowd-pleaser that never gets old and an excellent way to mix up your baking routine. Give it a try and watch how it effortlessly becomes a beloved favorite in your kitchen, just like it did in mine.
Print
Chocolate Zucchini Banana Cake Recipe
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 9 squares
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Description
This moist and delicious Chocolate Zucchini Banana Cake combines the natural sweetness of ripe bananas and shredded zucchini with rich cocoa and semi-sweet chocolate chips. Perfect as a healthier dessert option, it features a tender crumb and deep chocolate flavor, enhanced with warm cinnamon. Ideal for a sweet treat that sneaks in some veggies, this cake is easy to prepare and sure to satisfy chocolate lovers.
Ingredients
Main Ingredients
- 1 cup mashed ripe banana (about 2 bananas)
- 1 cup shredded zucchini (excess moisture squeezed out)
- 2 large eggs
- 1/2 cup vegetable oil
- 1/2 cup brown sugar
- 1/4 cup granulated sugar
- 1 teaspoon vanilla extract
Dry Ingredients
- 1 cup all-purpose flour
- 1/2 cup unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 1 teaspoon ground cinnamon
Add-Ins
- 1/2 cup semi-sweet chocolate chips (plus more for topping, optional)
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C). Lightly grease an 8×8-inch baking pan or line it with parchment paper for easy removal of the cake after baking.
- Mix Wet Ingredients: In a large bowl, whisk together the mashed banana, shredded zucchini (with moisture squeezed out), eggs, vegetable oil, brown sugar, granulated sugar, and vanilla extract until the mixture is smooth and well combined.
- Combine Dry Ingredients: In a separate bowl, sift together the all-purpose flour, unsweetened cocoa powder, baking soda, baking powder, salt, and ground cinnamon to ensure even distribution of the leavening agents and spices.
- Mix Batter: Gradually add the dry ingredients into the wet ingredients, stirring gently until just combined to avoid overmixing, which can make the cake dense.
- Add Chocolate Chips: Fold in the semi-sweet chocolate chips evenly throughout the batter to add bursts of melted chocolate in every bite.
- Prepare for Baking: Pour the batter into the prepared baking pan and spread it evenly with a spatula.
- Bake: Place the pan in the preheated oven and bake for 35 to 40 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Avoid overbaking to keep the cake moist.
- Cool and Serve: Let the cake cool completely in the pan on a wire rack before slicing into 9 squares. Optionally, sprinkle additional chocolate chips or dust with powdered sugar before serving for an appealing finish.
Notes
- Be sure to squeeze out excess moisture from the shredded zucchini to prevent the cake from becoming soggy.
- This cake stays moist for several days when stored properly and can be frozen for longer storage.
- You can bake this recipe in a loaf pan if you prefer a bread-like texture instead of square cake slices.

