This lemon blueberry cake is a luscious, zesty treat that’s incredibly easy to make. Bursting with fresh blueberry flavor and a tangy lemon twist, it’s perfect for family gatherings or a cozy weekend indulgence. Enjoy the bright taste of summer any time of year!
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How To Make Lemon Blueberry Cake
Making a lemon blueberry cake is simple and rewarding. With just a few ingredients, you can create a delightful dessert that will impress everyone. Let’s dive into the details of this delicious cake!

Ingredients
Vanilla Cake Mix
Start with a base of vanilla cake mix for a fluffy texture. It’s quick and convenient, allowing you to whip up this cake in no time.
Fresh Lemons
You’ll need the juice and zest of 1 1/2 lemons to infuse your cake with a bright, citrusy flavor that beautifully complements the blueberries.
Blueberries
Using 1 3/4 cups of fresh blueberries adds juicy bursts of flavor. If fresh berries aren’t available, frozen blueberries work just as well!
All-Purpose Flour
A small amount of all-purpose flour helps coat the blueberries. This step prevents them from sinking in the batter, ensuring even distribution throughout the cake.
Unsalted Butter
Softened unsalted butter is essential for a rich, creamy frosting that perfectly balances the tartness of the cake.
Powdered Sugar
You’ll need powdered sugar for the frosting, providing a sweet, smooth finish that complements the lemon and blueberry flavors.
Heavy Cream
Heavy cream adds a luxurious texture to the frosting, making it creamy and easy to spread.
Pure Vanilla Extract
A touch of pure vanilla extract enhances the overall flavor, making your cake irresistibly delicious.
Kosher Salt
Just a pinch of kosher salt elevates the sweetness and balances the flavors in your cake and frosting.
Step-by-Step Instructions
Preheat the Oven
Begin by preheating your oven to 350ºF. Grease three 9-inch cake pans with cooking spray and line them with parchment paper for easy removal.
Prepare the Cake Batter
Next, prepare the cake mix according to the package instructions. Mix in the juice and zest of 1 lemon for a burst of flavor.
Bake the Cake Layers
In a small bowl, coat 1 cup of blueberries with flour to prevent sinking. Gently fold the blueberries into the batter. Divide the mixture evenly among the pans and bake for 18 to 20 minutes, or until a toothpick comes out clean.
Cool the Cake
Once baked, allow the cake layers to cool in the pans for 10 minutes. Then, invert them onto a wire rack to cool completely.
Make the Frosting
While the cake cools, beat the softened butter and 2 1/2 cups of powdered sugar in a large bowl. Add the remaining lemon juice and zest, then mix in the heavy cream, vanilla, and salt until smooth. Adjust sweetness with additional powdered sugar if desired.
Assemble the Cake
To assemble, place a small amount of frosting on your cake plate to prevent slipping. Insert parchment strips around the edges. Place the first cake layer on the plate, spread frosting on top, and repeat with the second and third layers. Smooth frosting over the top and sides of the cake.
Garnish and Serve
Finally, garnish your cake with the remaining blueberries, thin lemon slices, and additional lemon zest before serving. Each slice promises a delightful experience!
Recipe Tips
Variations of Lemon Blueberry Cake
Feeling adventurous? Try variations like lemon cream cheese frosting or even a poke cake version for added fun!
Substitutions for Ingredients
If you can’t find fresh blueberries, frozen ones work wonderfully in this recipe. Just make sure to adjust the baking time slightly if needed!
Make Ahead
You can make the cake up to a week in advance. Just wrap it tightly in plastic wrap and store it at room temperature. The frosting can be made two weeks ahead and stored in the refrigerator.
Storage
Once frosted but not cut, the cake can last about four days at room temperature if covered properly. After cutting, seal the exposed areas with plastic wrap to retain moisture.
FAQs
What ingredients do I need for a lemon blueberry cake?
To make a lemon blueberry cake, you need vanilla cake mix, fresh lemons, blueberries, all-purpose flour, unsalted butter, powdered sugar, heavy cream, pure vanilla extract, and kosher salt.
How do I ensure my lemon blueberry cake stays moist?
To keep your lemon blueberry cake moist, avoid overbaking and store it properly. Use a simple syrup or a moist frosting to help retain moisture as well.
Can I use frozen blueberries in my lemon blueberry cake?
Yes, you can use frozen blueberries instead of fresh. Just coat them in flour to prevent sinking and adjust the baking time if needed.
What are some great frosting ideas for lemon blueberry cake?
Lemon buttercream and cream cheese frosting are both fantastic options for lemon blueberry cake, adding tangy richness and flavor.
How do I store leftover lemon blueberry cake?
Store leftover lemon blueberry cake in an airtight container at room temperature for up to four days or in the refrigerator for longer freshness.
Related Recipes to try
Conclusion
Enjoy making this lemon blueberry cake for your next special occasion or a cozy family gathering. For more inspiration, check out my Pinterest for creative lemon recipes. This cake is sure to become a favorite, blending the bright flavors of lemon and the sweetness of blueberries beautifully!

Lemon Blueberry Cake: A Delightful Dessert
Equipment
- oven
- Cake pans
- mixing bowl
- wire rack
- Spatula
Ingredients
- 1 box vanilla cake mix plus ingredients required on the box
- 1 3/4 cups fresh blueberries divided
- 3 tablespoons all-purpose flour
- 1 cup unsalted butter (2 sticks), softened
- 3 cups powdered sugar
- 1/4 cup heavy cream
- 1 teaspoon pure vanilla extract
- Pinch of kosher salt
- Thin lemon slices for topping
Instructions
- Preheat the oven to 350ºF, grease three 9-inch cake pans, and line with parchment paper.
- Prepare the cake mix according to package instructions, then mix in the juice and zest of 1 lemon.
- Coat 1 cup of blueberries with flour and gently fold them into the batter.
- Divide the batter among the prepared pans and bake for 18 to 20 minutes until a toothpick comes out clean.
- Cool the cakes in the pans for 10 minutes, then invert onto a wire rack to cool completely.
- Beat softened butter and 2 1/2 cups of powdered sugar, then add lemon juice, zest, heavy cream, vanilla, and salt.
- Assemble the cake by spreading frosting between layers and smoothing it over the top and sides.
- Garnish with remaining blueberries, lemon slices, and zest before serving.




