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One-Bowl Vegan Chocolate Zucchini Cake with Avocado Oil – Moist, Healthy & Easy

By Beginnerbakes Test KitchenReviewed by Beginnerbakes Editorial TeamPublished Apr 7, 2026 · Updated May 12, 2026
American 50 mins beginner-friendlyeasyone-bowlstep-by-stepvegan-optionsdairy-freelow-fatchocolatehealthy bakingminimal-ingredientscomfort-foodparty

Make this beginner-friendly one-bowl vegan chocolate zucchini cake using fresh grated zucchini and avocado oil for a moist, dairy-free, and low-fat dessert. Perfectly easy, healthy, and delicious for any occasion.

One-Bowl Vegan Chocolate Zucchini Cake with Avocado Oil – Moist, Healthy & Easy
Prep 15 min
Cook 35 min
Total 50 min
Servings 8
Difficulty easy
Cuisine American

Recipe Details

Prep15 min
Cook35 min
Total50 min
Servings8
Difficultyeasy
CuisineAmerican
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Ingredients

Servings 8
  • 1 1/2 cups (180g) all-purpose flour
  • 1/2 cup (45g) unsweetened cocoa powder
  • 1 cup (200g) granulated sugar or coconut sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1 cup (110g) grated zucchini (about 1 medium zucchini)
  • 1/2 cup (120ml) avocado oil
  • 1 cup (240ml) unsweetened non-dairy milk (such as almond or soy milk)
  • 1 teaspoon vanilla extract
  • 1 tablespoon apple cider vinegar

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and flour an 8-inch round cake pan or line it with parchment paper.
  2. In a large mixing bowl, sift together the flour, cocoa powder, sugar, baking soda, baking powder, and salt for a lump-free, tender crumb.
  3. Add the grated zucchini to the dry ingredients and stir gently to combine evenly.
  4. Pour in the avocado oil, unsweetened non-dairy milk, vanilla extract, and apple cider vinegar all at once.
  5. Using a large spoon or spatula, stir the wet and dry ingredients just until combined; avoid overmixing to keep the cake soft and moist.
  6. Pour the batter into the prepared cake pan, smoothing the top with a spatula.
  7. Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
  8. Remove the cake from the oven and let it cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
  9. Once cooled, optionally frost with your favorite vegan chocolate frosting or enjoy plain for a healthy treat.
  10. Slice and serve. Store leftovers in an airtight container at room temperature for up to 3 days or refrigerated up to a week.

Frequently Asked Questions

Reader questions and answers for this recipe will appear here.

Make this one-bowl vegan chocolate zucchini cake versatile and adaptable to dietary needs with these ingredient substitutions while maintaining the cake’s moist, healthy qualities:

  • Flour: Use gluten-free all-purpose blends with xanthan gum for gluten-free baking.
  • Cocoa Powder: Choose natural or Dutch-processed cocoa powder depending on flavor and leavening preferences. Carob powder is a caffeine-free alternative.
  • Sugar: Coconut sugar lowers glycemic index; maple syrup or agave can replace granulated sugar but reduce non-dairy milk slightly to balance liquids.
  • Avocado Oil: Substitute with neutral oils like canola or light olive oil. Walnut oil adds rich, nutty flavor if no nut allergies.
  • Non-Dairy Milk: Almond, soy, oat, or light coconut milk all work well; always opt for unsweetened varieties for best control over sweetness.
  • Apple Cider Vinegar: White vinegar or lemon juice work as effective alternatives to activate baking soda.

These swaps keep the cake moist, delicious, and suitable for various dietary needs and ingredient availability.

Equipment Needed

To bake this beginner-friendly one-bowl vegan chocolate zucchini cake, you'll need just a few essential tools to keep the process simple and produce delicious results:

  • 8-inch round cake pan: Use a standard 8-inch pan. Grease and flour it or line with parchment paper for easy cake release.
  • Large mixing bowl: One large bowl is sufficient to combine all ingredients, keeping cleanup minimal.
  • Sifter or fine mesh sieve: For evenly sifting dry ingredients like flour and cocoa powder to avoid lumps.
  • Grater: Needed to finely grate fresh zucchini for natural moisture.
  • Measuring cups and spoons: Accurate measurements ensure balanced texture and flavor for this low-fat vegan cake.
  • Mixing spoon or spatula: Use a flexible spatula or sturdy spoon to gently combine ingredients without overmixing.
  • Toothpick or cake tester: To verify cake is baked through by checking for clean or slightly moist crumbs.
  • Wire rack: Essential for cooling the cake evenly and preventing sogginess after baking.

Optional: A hand mixer can speed mixing, though stirring by hand works perfectly well.

Ingredient Prep Notes

Grating Zucchini: Wash zucchini and grate finely using a box grater. Do not squeeze out moisture; the natural water content enhances cake tenderness and moistness.

Avocado Oil Substitutes: If unavailable, use neutral oils like light olive oil, sunflower oil, or melted liquid coconut oil without compromising flavor or moisture.

Non-Dairy Milk Alternatives: Unsweetened almond, soy, oat, or cashew milk are excellent substitutes. Choose unsweetened versions to control sweetness.

Sugar Options: Granulated white or coconut sugar are ideal. Cane sugar or evaporated cane juice can also work. For reduced sugar, lower amount slightly or use a natural sweetener blend like maple syrup, adjusting liquids accordingly.

Flour Variations: All-purpose flour is recommended. For gluten-free baking, use a 1:1 gluten-free flour blend with xanthan gum. Whole wheat pastry flour adds fiber but may yield a denser cake.

Apple Cider Vinegar: Reacts with baking soda to help the cake rise and adds subtle tang. White vinegar is a suitable equal substitute.

Mixing Tips: Optionally mix wet ingredients separately before adding to dry for easier mixing. Stir just until incorporated to preserve a tender crumb.

Oven Note

Fully preheat your oven to 350°F (175°C) before baking to ensure even cooking and proper rise. Use an oven thermometer if temperatures are inconsistent.

Place the cake pan on the oven's center rack for optimal airflow. Limit oven door openings, especially during the first 25 minutes, to prevent heat loss that may cause the cake to sink.

Bake for 30 to 35 minutes, testing doneness by inserting a toothpick in the center; it should come out clean or with few moist crumbs, indicating perfect moistness.

If baking at high altitude or using convection ovens, reduce temperature by 25°F (15°C) and monitor baking time closely.

After baking, cool cake in the pan for 10 minutes before transferring to a wire rack to cool completely. This step helps the cake set and prevents crumbling.

Easy Upgrade Ideas

Customize your easy vegan chocolate zucchini cake with these beginner-friendly upgrades that add texture, flavor, and presentation without complexity:

  • Add Crunch: Fold in 1/3 cup chopped walnuts, pecans, or vegan chocolate chips for delightful texture and bursts of chocolate.
  • Fruit Enhancements: Mix in fresh or frozen raspberries, chopped strawberries, or blueberries for a fruity complement to the chocolate and zucchini.
  • Warm Spices: Add 1/2 teaspoon cinnamon or a pinch each of cinnamon and nutmeg to the dry ingredients for cozy, warming notes.
  • Frosting Options: Top the cooled cake with quick vegan chocolate ganache or a simple dusting of powdered sugar for an elegant finish.
  • Nut-Free Alternative: Substitute avocado oil with sunflower or safflower oil for nut-free baking without losing moisture.
  • Muffin or Mini Cakes: Use lined muffin tins or mini cake pans to make kid-friendly, portable treats perfect for snacks or breakfasts.
  • Garnish Ideas: Decorate with fresh mint leaves or dark chocolate shavings for an inviting, gourmet presentation.

These tweaks keep the recipe simple while allowing you to personalize it for any occasion.

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