Avocado and Courgette Cake Recipe: Lightly Sweetened, Vegan Moisture Boost

This vegan avocado and courgette cake transforms humble vegetables into a rich, moist dessert that surprises even non-vegan eaters. 🌿 The secret lies in blending ripe avocado and grated courgette into the batter, creating a tender crumb without dairy or eggs—just natural moisture and subtle sweetness that keeps every slice perfectly balanced.

What sets this recipe apart is its effortless simplicity: no special equipment, no complicated techniques, just a one-bowl mix that bakes to golden perfection. The courgette adds a delicate floral note while the avocado keeps the texture impossibly tender, even after cooling. Perfect for those who want dessert without guilt—or for anyone craving a cake that’s as nutritious as it is delicious.

By the time it emerges from the oven, you’ll have a cake with a springy crumb, lightly sweetened edges, and a subtle earthiness that pairs beautifully with citrus glaze or fresh berries. The best part? It’s ready in under an hour, making it ideal for weeknight treats or last-minute gatherings.

For an extra touch, dust with powdered sugar or garnish with mint leaves—though honestly, the cake stands perfectly on its own. This is the kind of recipe that proves healthy baking can be indulgent, impressive, and foolproof all at once.

Ingredients for avocado and courgette cake

Eight wholesome ingredients create this vegan cake's signature moisture and delicate floral notes.

The avocados and courgettes are the stars—ripe but firm avocados prevent bitterness, while freshly grated courgette (no liquid squeezed out) ensures proper moisture balance. For courgettes, Trader Joe's or local farmers markets offer the freshest selection. Look for vibrant green courgettes with smooth skin—avoid any with soft spots. The coconut oil should be 100% pure, cold-pressed for optimal flavor; store it in a cool, dark place to prevent rancidity. When selecting flour, King Arthur or Bob's Red Mill brands provide consistent baking results.

No ripe avocados? Mash 1 banana with 1 tbsp lemon juice as a substitute, though texture will differ slightly. Running short on courgettes? Zucchini works in a pinch, but reduce to 1 lb and pat dry thoroughly. The baking powder and soda must be fresh—test by mixing with water; if it fizzes vigorously, they're still potent. For the citrus, organic lemons yield better zest, but conventional works fine. The powdered sugar is optional but adds that restaurant-quality finish—store it in an airtight container to prevent clumping.

This batter keeps in the fridge for 24 hours before baking, making it perfect for last-minute gatherings. Once baked, the cake stays moist for 3 days when wrapped tightly in plastic wrap at room temperature. For longer storage, slice and freeze individual portions for up to 3 months. The courgette's natural sweetness intensifies after baking, so taste before adding extra sugar. Leftovers reheat beautifully in the microwave for 15 seconds, though it's best enjoyed fresh from the oven.

Step-by-step instructions for avocado and courgette cake

Here's how to create a perfectly moist, vegan cake using unexpected but brilliant ingredients.

Cut the 2 whole ripe avocados in half, remove the pits, and scoop the flesh into a food processor. Add the 1.5 lb fresh courgettes (previously grated and seeds removed) and pulse until completely smooth. This mixture forms the cake's moisture foundation, replacing traditional oils or eggs.

The texture should be velvety with no visible chunks—this ensures even distribution throughout the batter. I like to press the mixture through a fine-mesh sieve to eliminate any remaining courgette fibers. This step prevents a gritty texture in the final cake. Taste the mixture now—it should be slightly sweet from the avocados and tangy from the courgettes.

In a large mixing bowl, combine the avocado-courgette purée with the 0.5 cup melted coconut oil, 0.75 cup plant-based milk, 1 tbsp vanilla extract, 1 tbsp lemon zest, and 2 tbsp lemon juice. Whisk until completely smooth and well incorporated. The lemon brightens the natural flavors while balancing the richness of the avocados.

Here's the thing—don't skip the lemon. It prevents any "green" aftertaste from the courgettes and enhances the overall brightness of the cake. The mixture should be homogeneous with no visible streaks of coconut oil. If it's too thick after adding all ingredients, add 1-2 tablespoons more plant-based milk to achieve a pourable consistency.

In a separate bowl, sift together the 2 cups all-purpose flour, 1 cup granulated sugar, 1 tsp baking powder, 0.5 tsp baking soda, and 0.5 tsp salt. This sifting step is crucial—it aerates the flour and prevents dense pockets in your cake. Whisk the dry ingredients thoroughly to distribute the baking powder and soda evenly.

I always use light brown sugar here—the molasses content adds subtle depth that complements the avocado's natural sweetness. The baking powder and soda work together to create lift, while the salt enhances all the flavors. Gently fold the dry ingredients into the wet mixture using a spatula, mixing just until combined. Overmixing develops gluten, which leads to a tough cake.

Preheat your oven to 350°F and grease two 8-inch round cake pans or one 9x13-inch baking pan. Pour the batter evenly into the prepared pan(s) and smooth the top with a spatula. Bake for 40-45 minutes (or 30-35 minutes for the 9x13-inch pan) until a toothpick inserted in the center comes out clean with just a few moist crumbs.

Watch for visual cues—the edges should pull away slightly from the pan, and the top should be golden brown. I press down gently on the center during the last 5 minutes of baking to ensure even cooking. The cake should spring back when touched lightly—this indicates proper doneness. If the top browns too quickly, tent loosely with aluminum foil after the first 20 minutes.

Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. This gradual cooling prevents cracking. Once completely cooled, dust the top with the 0.25 cup powdered sugar (optional) for a delicate finish. The cake will be moist but not wet—thanks to the avocado's natural binding properties.

Real talk: This cake tastes best served at room temperature, so don't rush the cooling process. The flavors meld beautifully as it sits, and the texture becomes perfectly tender. Slice with a sharp serrated knife for clean pieces. Each slice should reveal a fine, even crumb with no dense areas—proof of our careful preparation.

Make-ahead tips for leftovers

Prep Ahead Essentials

Make the batter up to 24 hours in advance and store it in an airtight container in the fridge. The flavors meld beautifully overnight, and the courgette's natural sweetness intensifies. I like to mix everything the night before so I can simply pour and bake in the morning—no last-minute stress. Just give the batter a quick whisk before baking to restore consistency. 💫

Batter Storage Tips

If you're short on time, the avocado-courgette purée can be prepped 1 day ahead and stored in a sealed container with plastic wrap pressed directly on the surface to prevent browning. Keep it refrigerated until ready to use. For the dry ingredients, store them in a separate airtight container for up to 1 week—just be sure to sift them again before mixing. This separation keeps everything fresh.

Baking in Advance

This cake actually tastes better the next day! Bake it completely, then wrap tightly in plastic wrap or store in an airtight container. It stays moist for 3 days at room temperature. For longer storage, slice and freeze individual portions for up to 3 months. I love making a double batch on weekends—perfect for quick breakfasts or impromptu desserts during the week.

Freezing Finished Cake

For maximum convenience, freeze the fully baked and cooled cake in slices. Wrap each slice tightly in plastic wrap and place them in a freezer bag. When ready to serve, thaw at room temperature for 1-2 hours or microwave for 15 seconds to restore moisture. The texture remains tender, though slightly less springy than fresh-baked. This is my go-to strategy for holiday baking—no one ever guesses it's vegan! ❄️

Make-Ahead Garnishes

Prep your garnishes ahead of time to save even more effort. Make a simple citrus glaze by mixing 0.5 cup powdered sugar with 2 tbsp lemon juice and 1 tsp vanilla extract—store it in a small jar in the fridge for up to 5 days. Fresh berries or mint leaves can be washed and stored in a damp paper towel in the fridge for 2-3 days. This way, all you need to do is assemble everything when ready to serve.

Portion Control

For easy serving, divide the batter evenly between two 8-inch pans or use a 9x13-inch pan for a sheet cake. If you're planning to freeze individual portions, bake in a 9x13-inch pan first—it's easier to slice after freezing. I find that cutting the cake into 12 equal wedges makes portioning effortless, whether serving fresh or reheating later. Label your containers clearly with dates to track freshness.

Frequently asked questions