Gluten-Free Lemon Zucchini Cake(Dairy-Free Option)

This gluten-free lemon zucchini cake is light, moist, and bursting with fresh citrus flavor. Made with real lemon zest, lemon juice, and freshly grated zucchini, it’s the perfect spring or summer bake. Finished with a creamy lemon cream cheese buttercream, this cake is soft, tender, and beautifully balanced.

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The Best Gluten-Free Lemon Zucchini Cake

This cake is fresh, vibrant, and incredibly moist thanks to the zucchini and oil base. It’s simple to make, easy to adapt to dairy-free, and perfect for brunch, birthdays, or just because.

• Bright Lemon Flavor: Fresh zest and juice create bold citrus flavor without being overpowering.
• Super Moist Texture: Oil, sour cream, and zucchini keep the crumb soft for days.
• Naturally Gluten-Free: Made with a 1:1 gluten-free flour blend for easy baking success.
• Dairy-Free Friendly: Easily adaptable with dairy-free sour cream, butter, and cream cheese.

Gluten-Free Lemon Zucchini Cake Ingredients & Substitutions

These simple ingredients work together to create a soft, fluffy cake with vibrant lemon flavor. Here’s why each one matters and how you can swap it if needed.

Lemon Zucchini Cake

• Gluten-Free 1:1 Flour Blend: Provides structure while keeping the cake tender. Swap with all-purpose flour if gluten isn’t a concern for you.
• Baking Powder: Helps the cake rise and stay fluffy. No swap recommended for best results.
• Baking Soda: Reacts with the lemon juice for lift. Do not substitute.
• Granulated Sugar: Sweetens and creates a tender crumb. You can substitute with organic cane sugar.
• Lemon Zest: Adds concentrated lemon flavor. Fresh zest is best; dried won’t give the same result.
• Neutral Oil: Keeps the cake moist. Canola, vegetable, avocado, or light olive oil all work.
• Sour Cream: Adds richness and softness. Swap with dairy-free sour cream, full-fat plain Greek yogurt, or mayonnaise.
• Eggs: Provide structure and stability. For egg-free, try a 1:1 egg replacer suitable for baking, but note that the texture will be denser.
• Lemon Juice: Adds brightness and balances sweetness. Freshly squeezed is best, but concentrate will work.
• Grated Zucchini: Keeps the cake incredibly moist without tasting like vegetables. Yellow zucchini also works.

Lemon Cream Cheese Buttercream

• Butter: Creates the base of the frosting. Use plant-based brick-style butter for dairy-free. I love using Becel plant-based bricks.
• Cream Cheese: Adds tang and creaminess. Use full-fat block-style for the best taste and texture. Dairy-free cream cheese works beautifully in this recipe. I like to use Violife.
• Powdered Sugar: Sweetens and thickens the frosting. No recommended substitute.
• Lemon Zest: Enhances lemon flavor. Fresh is best.
• Lemon Juice: Adds brightness and smooth texture.
• Fine Sea Salt: Balances sweetness. Table salt works if needed, but reduce the amount.

Gluten-Free Lemon Zucchini Cake Step-by-Step Instructions

This cake comes together easily and bakes into a beautifully soft single-layer cake. Preheat the oven, grab a spatula, and let’s start baking!

Lemon Zucchini Cake

1. Prep: Preheat the oven to 350°F. Grease and line an 8-inch round cake pan with non-stick baking spray and parchment paper.
2. Mix dry ingredients: In a small bowl, whisk together the flour, baking powder, baking soda, and salt.
3. Infuse the sugar: In a large mixing bowl, rub the lemon zest into the sugar with your fingers until fragrant and slightly damp.
4. Mix wet ingredients: Add the oil, sour cream, eggs, and lemon juice. Whisk until smooth and fully combined.
5. Combine: Add the dry ingredients and mix until just combined. Gently fold in the grated zucchini.
6. Bake: Pour the batter into the prepared pan and bake for 30–35 minutes, until golden and a toothpick inserted in the centre comes out clean.
7. Cool: Let cool in the pan for 10 minutes before transferring to a wire rack to cool completely.

Lemon Cream Cheese Buttercream

1. Cream: Beat the butter, cream cheese, and lemon zest on high speed until light and fluffy, about 5–10 minutes.
2. Sweeten: Add the powdered sugar, lemon juice, and salt. Mix on low until combined.
3. Whip: Increase speed to high and beat for 5 minutes until smooth and fluffy, scraping the bowl as needed.
4. Chill: Cover and refrigerate the frosting if not using it right away.

Gluten-Free Zucchini Lemon Cake Helpful Hints

A few small tips make a big difference with gluten-free cakes. Follow these easy hints and hacks for the yummiest lemon zucchini cake.

• Lightly Pat the Zucchini Dry: Remove excess moisture, but don’t squeeze it completely dry; that moisture keeps the cake soft.
• Don’t Overmix: Gluten-free batters can become dense if overworked. Mix just until combined.
• Use Block Cream Cheese: Tub-style cream cheese will make the frosting too soft.
• Cool Completely Before Frosting: Even slightly warm cake will melt the buttercream.

Fun Flavor Twists For A Gluten-Free Lemon Zucchini Cake

Once you’ve made this cake once, you’ll love experimenting with simple flavor additions. This recipe is especially delicious with a classic bakery-style lemon poppy seed twist. Let me know if you try one of these ideas out!

• Lemon Poppy Seed: Add 1–2 tablespoons of poppy seeds to the batter for a subtle crunch and a beautiful speckled look.
• Blueberry Lemon: Fold in ½ cup fresh or frozen blueberries for juicy bursts of sweetness.
• Coconut Lemon: Add shredded coconut to the batter and garnish with toasted coconut flakes.

The Best Gluten-Free Lemon Zucchini Cake Recipe

This gluten-free lemon zucchini cake is soft, moist, and packed with fresh lemon flavor in every bite. It’s the perfect balance of bright citrus and creamy, tangy frosting. Make it dairy-free with easy substitutions included in the recipe.

If you try this recipe, I’d love for you to leave a 5-star rating and review, and don’t forget to tag me on social media @ cakedbykatie so I can see your beautiful bakes.

More Delicious Spring Baking Recipes

Once spring hits, I’m ready for everything fresh and full of flavor. Here are a few of my spring treats that I think you’ll enjoy.

• Gluten-Free Zucchini Muffins (Dairy-Free Option)
• Lemon Lavender Cake (GF & DF Option)
• Gluten-Free Lemon Blueberry Bars (Dairy-Free)

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