Name: Lemon Blueberry Sheet Cake Recipe
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: American
Ingredients: 3 cups all-purpose flour; 2 teaspoons baking powder; 1/2 teaspoon baking soda; 1 1/4 teaspoon salt; 1 cup butter (2 sticks), softened; 1 1/2 cups granulated sugar; Juice and zest of 2 lemons (about 1/4 cup lemon juice); 4 large eggs; 1 cup buttermilk; 2 teaspoons vanilla bean paste; 1 1/2 cups fresh blueberries, tossed with 1 tablespoon flour; 2 1/2 cups powdered sugar; 1/3 cup lemon juice

Jump to Recipe· 3.8 from 11 reviews

If you’re craving a dessert that bursts with bright, fresh flavor and a moist, tender crumb, you have to try this Lemon Blueberry Sheet Cake Recipe. Perfect for summer gatherings or anytime you want a slice of sunshine on your plate, this cake truly marries the tartness of juicy lemons with the sweet pop of fresh blueberries. The luscious lemon glaze drizzled on top adds just the right amount of zing, making every bite an irresistible treat that’s as beautiful as it is delicious.

Ingredients You’ll Need

A clear glass bowl sits on a white marbled surface, filled with light beige batter with a smooth texture. On top of the batter, close to the edges, there are many scattered dark blue blueberries. A wooden stick is placed in the batter, slightly stirring the blueberries, creating small swirls in the mix. The view is from above, showing the round shape of the bowl and the simple, clean background. photo taken with an iphone --ar 4:5 --v 7

The beauty of this Lemon Blueberry Sheet Cake Recipe is in its simple yet vibrant ingredients that work together to create a cake that’s bursting with flavor and perfect texture. Each element plays its part—from the tangy lemon juice and zest to the juicy bursts of blueberries to the creamy butter and luscious buttermilk that keep the cake incredibly moist.

3 cups all-purpose flour: The foundation that gives the cake structure and fluffiness.
2 teaspoons baking powder: Helps the cake rise to a beautiful, tender height.
1/2 teaspoon baking soda: Balances the acidity and aids in even rising.
1 1/4 teaspoon salt: Enhances all the other flavors without overpowering.
1 cup butter (softened): Adds richness and keeps the cake moist and flavorful.
1 1/2 cups granulated sugar: Sweetens the cake perfectly without being too much.
Juice and zest of 2 lemons (about 1/4 cup lemon juice): Brings a bright, fresh citrus punch that defines this cake.
4 large eggs: Provide structure and help bind the batter together.
1 cup buttermilk: Adds a subtle tang and keeps the cake tender and moist.
2 teaspoons vanilla bean paste: Infuses deep vanilla flavor and complements the lemon beautifully.
1 1/2 cups fresh blueberries tossed with 1 tablespoon flour: The little bursts of juiciness inside the cake—tossing them in flour keeps them from sinking.
2 1/2 cups powdered sugar: For the sweet, smooth glaze that tops the cake.
1/3 cup lemon juice: Mixed with powdered sugar to create a tangy glaze that ties the whole cake together.

How to Make Lemon Blueberry Sheet Cake Recipe

Step 1: Prepare Your Baking Dish and Oven

Start by preheating your oven to 350 degrees Fahrenheit. Grease a 9 by 13-inch baking dish and line it with parchment paper, leaving an overhang on the two long sides. This clever trick makes removing the cake a breeze once it’s baked and cooled, giving you perfect, clean slices without any struggle.

Step 2: Combine the Dry Ingredients

In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. This step ensures your leavening agents and salt are evenly distributed, which is key for a consistent texture throughout your lemon blueberry sheet cake.

Step 3: Cream Butter and Sugar, Add Eggs and Wet Ingredients

Using a stand mixer fitted with the paddle attachment or a hand mixer, cream the softened butter and granulated sugar until the mixture is light and fluffy—this aerates your batter for a soft crumb. Next, beat in the eggs, vanilla bean paste, and buttermilk on low speed until just combined. These ingredients add moisture and richness while balancing the tartness of the lemon.

Step 4: Incorporate Dry Ingredients and Lemon

Gradually add the dry ingredients into the wet mixture, blending just until no flour streaks remain. Then fold in the lemon juice and zest, which infuse the cake with that unmistakable fresh citrus aroma and flavor.

Step 5: Gently Fold in Blueberries

Carefully stir in the blueberries that have been tossed in a tablespoon of flour. This coating prevents them from sinking to the bottom of the cake while baking, ensuring juicy bursts of blueberry throughout every slice.

Step 6: Bake Your Cake to Perfection

Pour the batter evenly into your prepared pan and slide it into the oven. Bake for about 40 to 45 minutes, or until a toothpick inserted into the center comes out with moist crumbs. This moist-crumb test is crucial for perfectly baked cake that’s not dry or undercooked.

Step 7: Make the Lemon Glaze and Glaze the Cake

Once the cake has cooled completely, mix together the powdered sugar and lemon juice to create a smooth, pourable glaze. Drizzle this vibrant lemon glaze over the cake, letting it harden slightly to add a tangy sweetness on top of the tender crumb. Garnish with extra fresh blueberries or lemon slices if you like for an added visual and flavor pop.

How to Serve Lemon Blueberry Sheet Cake Recipe

The image shows a slice of lemon blueberry cake on a white plate with a white marbled surface background. The cake has three visible layers: a bottom layer filled with dark purple blueberries mixed into a light yellow sponge, a middle thick light yellow cake layer, and a smooth white icing layer on top. On the icing, there is a small slice of yellow lemon and a single fresh blueberry placed next to each other. In the background, another slice of the same cake sits on a white plate with a white marbled surface, and a silver fork rests next to the front plate. There is also a small orange flower on the surface between the two plates, adding a bright pop of color. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

For the perfect finishing touch, garnish your Lemon Blueberry Sheet Cake Recipe with fresh, plump blueberries and delicate lemon zest curls. A light sprinkling of powdered sugar can also add a pretty snow-like effect, making this cake as stunning as it is scrumptious.

Side Dishes

This cake shines on its own but pairs beautifully with a scoop of vanilla ice cream or a dollop of freshly whipped cream to balance the tartness. A cup of hot tea or fresh lemonade also complements the cake’s bright flavors wonderfully, turning your serving into a thoughtful treat.

Creative Ways to Present

Serve this cake on a rustic wooden board for a charming, casual vibe or plate it elegantly with edible flowers or mint sprigs for special occasions. Cutting the cake into small squares and serving with a fork alongside a fresh berry salad makes it perfect for potlucks or parties.

Make Ahead and Storage

Storing Leftovers

Wrap leftover lemon blueberry sheet cake tightly with plastic wrap or aluminum foil and keep it refrigerated. It will stay fresh and moist for up to 3 days, so you can enjoy a slice or two whenever a lemony blueberry craving strikes.

Freezing

If you want to keep the cake longer, you can freeze it without the glaze. Wrap individual slices or the whole cake securely in plastic wrap, then foil, and freeze for up to 2 months. Thaw overnight in the fridge when ready to enjoy.

Reheating

For the tastiest experience, gently warm slices in the microwave for 15 to 20 seconds before serving. This softens the cake and brings out the fresh lemon aroma, making it taste almost like it’s freshly baked.

FAQs

Can I use frozen blueberries instead of fresh?

Yes, you can, but toss frozen blueberries in flour as well and gently fold them in directly from frozen. Just be aware they may bleed a bit more, slightly coloring the batter and glaze.

What if I don’t have buttermilk?

No worries! You can easily make a buttermilk substitute by adding 1 tablespoon of lemon juice or white vinegar to 1 cup of milk. Let it sit for 5 minutes before using it in the recipe.

Can this cake be made gluten-free?

Absolutely. Swap the all-purpose flour for a gluten-free flour blend that includes xanthan gum for similar texture, but keep an eye on bake time, as it may vary slightly.

How can I make the glaze thicker?

To thicken the glaze, add more powdered sugar a tablespoon at a time until you reach your desired consistency. If it gets too thick, just thin it with a bit more lemon juice.

Is this Lemon Blueberry Sheet Cake Recipe good for celebrations?

Definitely! Its sunny, festive flavors and gorgeous presentation make it perfect for birthdays, showers, or just brightening up a weekday dessert.

Final Thoughts

There’s truly nothing like a slice of homemade Lemon Blueberry Sheet Cake Recipe to bring a smile to your face and brighten up any occasion. Its fresh citrus notes, juicy bursts of blueberry, and simple, tender crumb make it an instant favorite. Trust me, once you try this recipe, you’ll find yourself reaching for it again and again!