introduction
Bright, tender, and bursting with fresh berries, this Lemon Blueberry Sheet Cake is an easy crowd-pleaser that brings sunny flavor to brunches, potlucks, and weeknight dessert cravings. The lemon zest and juice keep the cake light and fresh, while a simple lemon glaze turns every bite into a glossy, irresistible finish. If you love bright fruit desserts, try these blueberry cheesecake protein bites for a grab-and-go snack that echoes the same flavors.
Why You’ll Love This Lemon Blueberry Sheet Cake:
- Bright, fresh lemon flavor balanced with juicy blueberries
- One-bowl batter (plus a quick glaze) for easy cleanup
- Hands-off baking — great for busy hosts and family kitchens
- Perfect for slicing into bars for picnics, school treats, or potlucks
- Keeps well and is easy to transport
Ingredients Needed :
Dry ingredients
- 3 cups all-purpose flour
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1 1/4 teaspoon salt
Wet ingredients
- 1 cup butter (2 sticks), softened
- 1 1/2 cups granulated sugar
- 4 large eggs
- 1 cup buttermilk
- 2 teaspoons vanilla extract
Citrus
- Juice and zest of 2 lemons (about 1/4 cup lemon juice)
Add-ins
- 1 1/2 cups fresh blueberries, tossed with 1 Tbs flour
Glaze
- 2 1/2 cups powdered sugar
- 1/3 cup lemon juice
Step-by-Step Instructions :
- Preheat the oven to 350 degrees F. Grease a 9×13 baking dish, and line with parchment paper so there’s an overhang over the two long sides of the pan. This will make removing the cake much easier!
- In a medium mixing bowl, whisk together the dry ingredients, flour through salt. Set aside.
- In a stand mixer fitted with the paddle attachment (or hand mixer), cream together the sugar and butter until light and fluffy. Add the eggs and vanilla, and buttermilk, and mix on low until incorporated. Add the dry ingredients, and mix until no streaks of flour remain. Mix in the lemon juice and zest. Gently stir in the blueberries with a spatula.
- Pour the cake batter into the prepared 9×13 baking dish, and bake for about 40-45 minutes, or until a toothpick comes out with moist crumbs. Allow to cool completely. You can lift the cake out of the pan before drizzling, or leave it in the dish to serve. Either way works!
- For the glaze: combine the powdered sugar and lemon juice, and pour over the cooled cake. Let the glaze harden, and then garnish with fresh fruit and serve!
Serving Suggestions Lemon Blueberry Sheet Cake
- Serve slightly warm with a scoop of vanilla ice cream or a dollop of whipped cream.
- Slice into bars for easy grab-and-go portions — perfect for picnics.
- For a brunch spread, pair with a light shortcake like this strawberry sheet shortcake and a pitcher of iced tea.
- Garnish with extra lemon zest and a few whole blueberries for a bakery-style finish.
Tips for Success Lemon Blueberry Sheet Cake
- Room-temperature ingredients mix together more smoothly; let the butter and eggs sit 30 minutes before baking.
- Tossing blueberries in a tablespoon of flour prevents them from sinking and keeps distribution even.
- Don’t overmix once you add the dry ingredients — stop when streaks of flour disappear to keep the crumb tender.
- Test doneness with a toothpick; a few moist crumbs indicate perfectly baked cake.
- For a lighter crumb and even baking, follow similar gentle folding and mixing techniques found in a reliable sheet cake recipe like this strawberry shortcake sheet cake.
- If using frozen blueberries, fold them in frozen and add a few extra minutes to the bake time.
variation (if any)
- Blueberry-Lavender: add 1/2 tsp culinary lavender to the batter for a floral note.
- Poppy Seed Lemon: stir 1–2 tablespoons poppy seeds into the batter for texture.
- Almond Swap: replace 1/2 tsp vanilla with 1/2 tsp almond extract for a nutty twist.
- Glaze Alternatives: trade lemon glaze for a cream cheese frosting for a richer finish.
FAQs
Q: Can I use frozen blueberries?
A: Yes — fold them in frozen and add a few minutes to bake time; freezing helps prevent excess bleeding into the batter.
Q: How should I store leftovers?
A: Keep the cake covered at room temperature for up to 2 days, or refrigerate (tightly covered) for up to 5 days. Bring to room temp before serving.
Q: Can I make this ahead for a party?
A: Absolutely. Bake and glaze the cake the day before, then store in the fridge. Remove 30–60 minutes before serving so flavors open up.
Q: Can I make the cake in a different pan?
A: You can divide the batter into two 9-inch round pans (reduce baking time) or use a 10×15 pan for a thinner sheet; adjust bake time accordingly.
Servings: 12 servings
Calories: 310kcal
Ingredients
Dry ingredients
- 3 cups all-purpose flour
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1 1/4 teaspoons salt
Wet ingredients
- 1 cup butter (2 sticks), softened
- 1 1/2 cups granulated sugar
- 4 large eggs
- 1 cup buttermilk
- 2 teaspoons vanilla extract
Citrus
- 2 lemons Juice and zest of 2 lemons (about 1/4 cup lemon juice)
Add-ins
- 1 1/2 cups fresh blueberries, tossed with 1 Tbs flour
Glaze
- 2 1/2 cups powdered sugar
- 1/3 cup lemon juice
Instructions
Preparation
- Preheat the oven to 350 degrees F. Grease a 9×13 baking dish, and line with parchment paper so there’s an overhang over the two long sides of the pan.
- In a medium mixing bowl, whisk together the dry ingredients, flour through salt. Set aside.
- In a stand mixer fitted with the paddle attachment (or hand mixer), cream together the sugar and butter until light and fluffy.
- Add the eggs, vanilla, and buttermilk, and mix on low until incorporated.
- Add the dry ingredients, and mix until no streaks of flour remain.
- Mix in the lemon juice and zest. Gently stir in the blueberries with a spatula.
Baking
- Pour the cake batter into the prepared 9×13 baking dish, and bake for about 40-45 minutes, or until a toothpick comes out with moist crumbs.
- Allow to cool completely. You can lift the cake out of the pan before drizzling or leave it in the dish to serve.
Glaze
- For the glaze: combine the powdered sugar and lemon juice, and pour over the cooled cake.
- Let the glaze harden, and then garnish with fresh fruit and serve!
Notes
Serve slightly warm with a scoop of vanilla ice cream or a dollop of whipped cream. For a brunch spread, pair with a light shortcake like strawberry sheet shortcake and a pitcher of iced tea. Garnish with extra lemon zest and whole blueberries for a bakery-style finish. Room-temperature ingredients mix together more smoothly.
Nutrition
Serving: 1g | Calories: 310kcal | Carbohydrates: 52g | Protein: 3g | Fat: 10g | Saturated Fat: 6g | Sodium: 230mg | Fiber: 1g | Sugar: 30g
Tried this recipe?Let us know how it was!
