This grain-free, flourless Chocolate Zucchini Cake is simple to make in a food processor and incredibly delicious. It’s moist, fudgy, and full of chocolate flavor while relying on wholesome ingredients.
You would never guess this rich cake is made with better-for-you ingredients. Cashew butter, unsweetened cocoa powder, pure maple syrup and fresh zucchini provide flavor, structure, and moisture. The result is an unexpectedly decadent dessert that still feels like a cleaner option.
The zucchini blends into the batter, keeping the crumb tender and moist without needing oil or dairy. If you want, you can finish the cake with a glossy chocolate ganache for an extra indulgent touch, or skip the ganache for a lighter version. This cake is naturally gluten- and grain-free and can be made nut-free by swapping nut butter for sunflower seed butter.
Why You’ll Love This Recipe:
- Wholesome Ingredients: The cake relies on minimally processed ingredients while still tasting indulgent.
- Rich and Moist: Fudgy texture and deep chocolate flavor make it satisfyingly decadent.
- Allergy-Friendly: Naturally gluten-free and grain-free; make it nut-free by using sunflower seed butter.
Ingredient Notes:
Fresh Zucchini: Grated zucchini is the key. Use about 1 cup grated (roughly one small zucchini). No need to squeeze out the water; the moisture is intentional and helps create a tender crumb.
Cashew or Almond Butter: These nut butters supply fat, body, and richness. Choose unsweetened nut butter for the best balance.
Eggs: Two large eggs give structure and lift so the cake bakes up light and slightly airy.
Unsweetened Cocoa Powder: This provides the chocolate base. Raw cacao powder works nicely but any unsweetened cocoa will do.
Pure Maple Syrup: A liquid sweetener that adds sweetness and keeps the cake moist. You can use a sugar-free maple syrup for a lower-carb version.
Baking Soda and Vinegar: A small amount of baking soda with vinegar (or lemon juice) creates lift during baking.
Ground Cinnamon: Optional, but cinnamon pairs beautifully with chocolate and deepens the flavor.
Sea Salt and Vanilla: Salt enhances the chocolate and vanilla adds warmth and balance.
For the Chocolate Ganache (optional):
Chocolate Chips: Use your preferred chocolate—semi-sweet, dark, or sugar-free depending on your taste.
Full-Fat Canned Coconut Milk: For a silky ganache without dairy. If you eat dairy, half-and-half works as an alternative.
Butter or Coconut Oil: A small amount adds gloss and smooth texture to the finished ganache.
Recipe Customizations:
- Swap any mild nut or seed butter for the cashew butter—peanut butter or sunflower seed butter both work.
- Stir 2/3 cup chocolate chips into the batter for pockets of melted chocolate.
- For a lower sugar option, use a sugar-free liquid sweetener and sugar-free chocolate chips.
- Enhance depth by adding 1–2 teaspoons instant coffee or espresso powder to the batter.
- Double the recipe to make a layered cake.
How to Make Chocolate Zucchini Cake:
Preheat the oven to 350°F (175°C) and line a 9-inch round or square cake pan with parchment paper.
Grate the zucchini with a box grater until you have 1 cup of shredded zucchini. Do not drain—the extra moisture is part of the recipe.
Place all cake ingredients, including the grated zucchini, into a food processor or high-speed blender. Process until the mixture becomes a thick, smooth batter. You may need to stop occasionally and scrape down the sides to ensure everything blends evenly.
Once blended, pour the batter into the prepared pan and smooth it into an even layer.
Bake on the center rack for 23–28 minutes, or until a tester comes out clean. A thermometer inserted into the center should read about 190°F when done. Remove the cake from the oven and cool it on a wire rack.
Prepare the Chocolate Ganache:
Combine chocolate chips, coconut milk (or half-and-half), and butter or coconut oil in a microwave-safe bowl. Heat in 20-second intervals, stirring between each, until the chocolate is fully melted and the mixture is smooth—about 60–80 seconds total.
Let the ganache cool briefly, then pour it over the cooled cake and spread evenly with a spatula. Chill the cake in the refrigerator for at least two hours so the ganache sets. Bring the cake back to room temperature briefly before serving if desired.
Slice and serve warm with a scoop of vanilla ice cream or a glass of cold milk. For a warm, gooey bite, microwave an individual slice for about 25 seconds to soften the ganache.
Storage Options:
- Room Temperature: Store covered for up to 2 days. If you’ve added ganache, chill the cake first so the topping firms before leaving it at room temperature.
- Refrigerator: Keep in an airtight container for up to 5 days.
- Freezer: Wrap leftover slices in parchment and place in a freezer bag for up to 2 months.
Recipe Tip
Measure the shredded zucchini to ensure you have the proper amount. Zucchinis vary in size and moisture, so measuring helps maintain the correct balance of wet and dry ingredients for predictable results.
This cake is perfect for everyday treats or special moments. It requires no advanced baking skills and is a great way to use extra zucchini during the harvest season. It was even good enough to serve as a birthday cake.
More Healthy Cake Recipes:
- Black Bean Chocolate Cake
- Gluten-Free Vanilla Cake
- Almond Flour Blueberry Cake
- Cherry Cake
- Strawberry Crumb Cake
- Almond Flour Pumpkin Cake
- Almond Flour Carrot Cake
Zucchini Chocolate Cake Recipe
Ingredients
- 1 cup grated zucchini
- 1 cup cashew butter or unsweetened almond butter
- 2 large eggs
- 2/3 cup pure maple syrup
- 2 tsp pure vanilla extract
- 1 tsp cider vinegar or lemon juice
- 2/3 cup unsweetened cocoa powder
- 3/4 tsp baking soda
- 1/2 tsp ground cinnamon (optional)
- 3/4 tsp sea salt*
Chocolate Ganache (optional)
- 1 cup chocolate chips
- 1/2 cup full-fat canned coconut milk** (or half-and-half)
- 1 tbsp coconut oil or butter
Instructions
- Preheat the oven to 350°F and line a 9-inch cake pan with parchment.
- Grate 1 cup zucchini and add it, unstrained, to a food processor with the remaining cake ingredients.
- Process until you have a thick, uniform batter, stopping to scrape down the sides as needed.
- Pour the batter into the prepared pan and smooth the top.
- Bake 23–28 minutes or until a tester comes out clean. The center should reach about 190°F.
- Cool the cake on a wire rack before adding ganache.
Prepare the Chocolate Ganache
- Combine chocolate chips, coconut milk (or half-and-half), and butter or coconut oil in a bowl. Heat gently, stirring until smooth.
- Let cool slightly, then pour over the cake and smooth. Chill for at least 2 hours to set.
- Serve slices warmed briefly or at room temperature. A 25-second zap in the microwave softens the ganache for an extra gooey experience.
Notes
*If using iodized table salt, reduce the amount to 1/4 tsp.
**Use half-and-half if you prefer a dairy ganache.
Nutrition
Calories: 314 kcal
Carbohydrates: 34 g
Protein: 6 g
Fat: 20 g
Nutrition information is an approximation.
Enjoy this healthier take on a chocolate cake and feel free to rate or comment if you try it!