Lemon Blueberry Sheet Cake Recipe

There's something magical about the combination of tart lemon and sweet blueberries baked into a soft, fluffy cake. This Lemon Blueberry Sheet Cake brings together bright citrus flavor with bursts of juicy berries in every bite—perfect for spring gatherings, summer cookouts, or just a Tuesday night treat.

this Recipe

I first made this cake when I had an overabundance of fresh blueberries from the farmers market and a few lemons hanging out in the crisper drawer. What started as a spontaneous dessert has turned into a crowd-favorite that I now bake on repeat. It's easy, quick, and always gets rave reviews.

The moment this cake comes out of the oven, the scent alone will have people flocking to the kitchen. Let me show you why this simple sheet cake deserves a permanent spot in your dessert rotation.

Why You'll Love This Lemon Blueberry Sheet Cake

You’re going to love how effortless and delicious this cake is. It strikes the perfect balance between fresh, fruity, and indulgently sweet.

First, it’s incredibly easy to make. Everything comes together in one bowl with pantry staples and a few fresh ingredients. No need for fancy mixers or complicated steps—just mix, pour, and bake.

It’s budget-friendly too. Using in-season blueberries and common baking ingredients means you can whip this up without a special trip to the store or spending much at all.

This cake is wonderfully versatile. Serve it as a casual weeknight dessert, dress it up with whipped cream or glaze for a party, or slice it for brunch alongside coffee.

And best of all, it stores beautifully. Make it ahead for entertaining, or enjoy leftovers over a few days—if it lasts that long!

Let’s take a closer look at what goes into this irresistible bake.

Ingredients Notes

What makes this Lemon Blueberry Sheet Cake shine is its thoughtful balance of fresh, zesty, and sweet ingredients. Each one plays a role in achieving that soft crumb and vibrant flavor.

All-purpose flour serves as the sturdy base of this cake. It gives just enough structure to hold the blueberries in place while allowing the texture to remain tender and moist. Be sure to spoon and level your flour for accurate measuring.

Fresh lemon zest and juice are what set this cake apart. The zest infuses the batter with bright citrus aroma, while the juice adds a light tang that complements the sweetness. Don't skip the zest—it brings the most lemony punch.

Blueberries, fresh or frozen, add sweet, juicy bursts to every bite. Fresh is ideal for peak season, but if you use frozen, don’t thaw them first. Tossing them with a little flour helps keep them evenly distributed in the batter.

Sour cream is the secret ingredient for a moist, tender crumb. It adds richness without overpowering the lemon, and helps the cake stay soft for days. You can also substitute Greek yogurt in a pinch.

You won’t need any special tools here. Just a standard 9x13-inch baking dish, a couple of mixing bowls, and a whisk or hand mixer will do the trick.

How To Make This Lemon Blueberry Sheet Cake

This cake comes together easily with just a few simple steps, and you’ll be surprised at how quickly your kitchen fills with the aroma of lemony sweetness.

Start by preheating your oven to 350°F and greasing a 9x13-inch baking dish. You can use butter, nonstick spray, or line it with parchment for easy removal. In a medium bowl, toss the blueberries with a teaspoon of flour and set aside.

In a large mixing bowl, combine your sugar and lemon zest. Rubbing the zest into the sugar releases its oils and boosts the lemon flavor. Add eggs, sour cream, lemon juice, and vanilla extract, whisking until smooth.

Next, stir in the flour, baking powder, baking soda, and salt. Mix just until combined—overmixing can make the cake tough. Gently fold in the blueberries, being careful not to crush them.

Pour the batter into your prepared pan and smooth the top. Bake for 30-35 minutes, or until the top is golden and a toothpick inserted in the center comes out clean. Let it cool in the pan for 10-15 minutes before slicing.

If you'd like, you can drizzle a simple lemon glaze over the top once the cake cools completely. Just mix powdered sugar with lemon juice until it reaches a pourable consistency.

In total, you’re looking at about 45 minutes from start to finish. The result? A golden, tender cake bursting with sunny lemon flavor and studded with juicy berries.

Storage Options

One of the best things about this cake is how well it stores. Whether you're planning ahead or savoring leftovers, it holds up beautifully.

To store at room temperature, cover the cake tightly with plastic wrap or foil and keep it on the counter for up to 2 days. Make sure it’s completely cooled first to prevent condensation.

For longer storage, refrigerate the cake in an airtight container. It will stay fresh for up to 5 days, though the texture may firm up slightly. Just let slices come to room temperature before serving.

You can also freeze this cake. Wrap individual pieces in plastic wrap and then foil, or place them in a freezer-safe container. It’ll keep well for up to 2 months. Thaw overnight in the fridge or on the counter.

To reheat, pop a slice in the microwave for about 10 seconds. It’ll taste just like it came out of the oven.

Variations and Substitutions

This recipe is endlessly adaptable depending on what you have on hand or your dietary needs. Here are a few fun ways to switch it up.

Swap the blueberries for other berries like raspberries, blackberries, or chopped strawberries. Just be sure to coat them with flour to prevent sinking.

For a dairy-free version, use non-dairy yogurt in place of sour cream and a plant-based butter or neutral oil. You’ll still get a moist and flavorful cake without the dairy.

If you prefer a more indulgent treat, add a crumb topping made with flour, brown sugar, and butter before baking. It adds texture and extra sweetness.

Want more lemon flavor? Stir in a teaspoon of lemon extract or add more zest to really amp it up.

Don’t be afraid to get creative! This cake is forgiving, flexible, and fun to play around with.

Whether you're a seasoned baker or just starting out, this Lemon Blueberry Sheet Cake is sure to become a go-to favorite. It's bright, beautiful, and bursting with flavor—and it just might be the easiest dessert you'll make all season.

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