Tasty Lemon Blueberry Zucchini Cake

Summer baking is one of my favorite ways to use up garden vegetables. Right now, my zucchini plants are working overtime, and I’ve been looking for new ways to enjoy them beyond the usual bread or muffins. That’s when I remembered how well zucchini pairs with fruit in baked goods.

This lemon blueberry zucchini cake has become my go-to recipe when I want something a little different. It’s perfect for those lazy weekend mornings or afternoon get-togethers with friends. The zucchini keeps the cake super moist, while the lemon and blueberries add just the right amount of sweetness and tang. Best of all, it’s a great way to sneak some veggies into dessert – my kids don’t even notice!

If you’ve got extra zucchini lying around or just want to try something new, this cake might be exactly what you’re looking for. Trust me, it’s the kind of recipe that’ll have people asking for seconds (and the recipe).

What Kind of Zucchini Should I Use?

Medium-sized zucchini are your best bet for this cake since they tend to have the perfect moisture content and fewer seeds than larger ones. If you’re using zucchini from your garden, pick them when they’re about 6-8 inches long – the really big ones can be watery and have tough seeds that might affect your cake’s texture. When grating your zucchini, there’s no need to peel it first (the skin adds nice flecks of green to your cake), and you can use either the large or small holes of your grater depending on how visible you want the zucchini to be in your finished cake. If your grated zucchini seems especially watery, just give it a gentle squeeze with paper towels before adding it to your batter.

Options for Substitutions

This cake recipe has several ingredients that you can swap if needed:

• Canola oil: You can easily replace canola oil with vegetable oil, melted coconut oil, or even unsweetened applesauce (use 3/4 cup applesauce for a lower-fat option).
• Zucchini: If zucchini isn’t available, you can use grated yellow summer squash instead – it works just the same and doesn’t change the taste.
• Blueberries: Fresh or frozen blueberries work well here. If using frozen, don’t thaw them first. You can also swap them with raspberries or blackberries for a different twist.
• All-purpose flour: You can use cake flour for a lighter texture (use 3 cups plus 6 tablespoons), or make it gluten-free with a 1:1 gluten-free flour blend.
• Icing sugar: Also known as powdered sugar or confectioner’s sugar – they’re all the same thing, so use whichever you can find.
• Fresh lemon juice: If you don’t have fresh lemons, use bottled lemon juice (about 2 tablespoons), though fresh really does taste better in this recipe.

Watch Out for These Mistakes While Baking

The biggest challenge when baking with zucchini is excess moisture – make sure to gently squeeze out the liquid from your grated zucchini using a clean kitchen towel or paper towels before adding it to your batter. Another common mistake is overmixing the batter, which can lead to a dense, tough cake instead of a light and fluffy one – mix just until the ingredients are combined, then stop. When it comes to the blueberries, skipping the flour coating can cause them to sink to the bottom of your cake, so don’t forget this crucial step. For the perfect lemon frosting consistency, make sure your butter is at room temperature (but not too soft) and add the lemon juice gradually while mixing – this prevents the frosting from becoming too runny or separating. Let the cake cool completely before frosting, as even slightly warm cake will cause the butter-based frosting to melt and slide off.

What to Serve With Lemon Blueberry Zucchini Cake?

This fresh summer cake pairs wonderfully with a scoop of vanilla ice cream or a dollop of lightly whipped cream on the side. For a morning or afternoon treat, serve it alongside your favorite hot beverage – I love it with a cup of Earl Grey tea since the bergamot complements the lemon flavors so nicely. If you’re serving this at a brunch, consider adding some fresh fruit on the side, like a mix of seasonal berries or sliced peaches. For an extra special touch, you could also offer a small pitcher of warm lemon sauce that guests can drizzle over their slice if they want even more citrusy goodness.

Storage Instructions

Keep Fresh: This lemon blueberry zucchini cake stays moist and yummy when kept in an airtight container at room temperature for up to 2 days. If you live somewhere warm, it’s better to pop it in the fridge where it’ll stay fresh for up to 5 days. Just make sure to cover it well to prevent it from drying out!

Freeze: Good news – this cake freezes really well! Cut it into portions, wrap each piece in plastic wrap and aluminum foil, then place in a freezer bag. It’ll keep its flavor for up to 3 months. Just remember to freeze it without the garnishes, as fresh blueberries and lemon wedges won’t freeze well.

Make Ahead: Want to get ahead? You can bake the cake layers a day before and store them wrapped in plastic wrap at room temperature. Make the frosting fresh when you’re ready to assemble – it takes just a few minutes and tastes best when fresh. If you’ve already frosted the cake, let it come to room temperature for about 30 minutes before serving.

Preparation Time	15-20 minutes
Cooking Time	50-55 minutes
Total Time	65-75 minutes
Level of Difficulty	Medium

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 4000-4500
• Protein: 30-40 g
• Fat: 220-250 g
• Carbohydrates: 500-550 g

Ingredients

For the cake:

• 1/4 tsp baking soda
• 2 cups grated zucchini (about 2 medium zucchini, squeezed dry)
• 1 pint blueberries (fresh or frozen, do not thaw)
• 3 large eggs
• 1 cup canola oil
• 3 cups all-purpose flour (I use King Arthur all-purpose flour)
• 1 tsp baking powder
• 1 tbsp vanilla extract
• 2 cups granulated sugar
• 1 tsp kosher salt

For the frosting:

• 2 sticks unsalted butter (softened to room temperature)
• 4 cups icing sugar (sifted for a smoother frosting)
• 1 tsp vanilla extract
• juice of 1 lemon (freshly squeezed for best flavor)

For the garnish:

• lemon wedges
• blueberries

Step 1: Prepare the Oven and Baking Pan

Preheat your oven to 350°F (175°C).

While the oven is preheating, take a 9×13-inch baking pan and spray it with Baker’s Joy or any non-stick baking spray, ensuring even coverage to prevent sticking.

Step 2: Mix the Wet Ingredients

In a large bowl, beat together the eggs, oil, vanilla extract, and sugar until they are well blended.

Once combined, stir in the grated zucchini to incorporate it evenly into the wet mixture.

Step 3: Combine the Dry Ingredients and Mix with Wet Ingredients

In a separate medium bowl, whisk together the flour, salt, baking powder, and baking soda.

Gradually add the wet mixture to the dry ingredients, mixing well until just combined.

Be careful not to overmix.

Step 4: Add Blueberries and Bake the Cake

Gently fold in the blueberries, taking care not to crush them.

Pour the batter into the prepared baking pan and spread evenly.

Bake in the preheated oven for about 50-55 minutes or until a toothpick inserted into the center comes out clean.

Allow the cake to cool completely in the pan on a wire rack.

Step 5: Prepare the Frosting

Using a hand mixer, cream the softened butter in a bowl until smooth and creamy.

Add the vanilla extract and mix until combined.

Gradually add the powdered sugar, incorporating a little at a time and mixing well after each addition.

Finally, blend in the lemon juice until the frosting is smooth and spreadable.

Step 6: Frost the Cake and Store

Once the cake has cooled completely, spread the prepared frosting evenly over the top of the cake.

For best results, store the frosted cake in the refrigerator until ready to serve, ensuring the frosting remains firm and appealing.