Why Make This Recipe
Lemon Blueberry Sheet Cake is a delightful dessert that brings a taste of summer to any gathering. The combination of zesty lemon and sweet blueberries creates a refreshing flavor that is perfect for parties, picnics, or just a cozy day at home. This cake is not only delicious but also simple to make, making it a great choice for bakers of all skill levels.
How to Make Lemon Blueberry Sheet Cake
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 extract
- 1 1/2 cups fresh blueberries, tossed with 1 tablespoon flour
- 2 1/2 cups powdered sugar
- 1/3 cup lemon juice
Directions:
- Preheat the oven to 350 degrees F. Grease a 9×13 baking dish and line it with parchment paper, leaving some overhang on the sides for easy removal.
- In a medium mixing bowl, whisk together the dry ingredients: flour, baking powder, baking soda, and salt. Set aside.
- In a stand mixer or using a hand mixer, cream together the sugar and softened butter until light and fluffy.
- Add the eggs, vanilla extract, and buttermilk to the mixture, mixing on low until everything is well combined.
- Gradually add the dry ingredients, mixing until no streaks of flour remain. Then mix in the lemon juice and zest.
- Gently stir in the blueberries using a spatula.
- Pour the batter into the prepared baking dish and bake for 40-45 minutes, or until a toothpick comes out with moist crumbs.
- Allow the cake to cool completely. You can lift it out of the pan before drizzling, or leave it in the dish to serve.
- For the glaze, combine the powdered sugar and lemon juice, then pour it over the cooled cake. Let the glaze harden, and garnish with fresh fruit before serving!
How to Serve Lemon Blueberry Sheet Cake
Serve this cake at room temperature, either plain or decorated with fresh berries on top. Slices can be placed on individual plates or served directly from the baking dish. Consider adding a scoop of vanilla ice cream on the side for an extra treat!
How to Store Lemon Blueberry Sheet Cake
Store any leftovers in an airtight container at room temperature for up to three days. If you want to keep it longer, you can refrigerate it. Just make sure to cover it well to keep it fresh!
Tips to Make Lemon Blueberry Sheet Cake
- Make sure your butter is softened to room temperature for the best texture.
- Toss the blueberries with flour to prevent them from sinking in the batter.
- If you like a stronger lemon flavor, feel free to add more lemon zest.
Variation
You can swap blueberries for other fruit, such as raspberries or blackberries, for a different flavor. Additionally, try adding poppy seeds for a unique twist!
FAQs
1. Can I use frozen blueberries instead of fresh ones?
Yes, you can use frozen blueberries! Just add them straight from the freezer without thawing.
2. What can I substitute for buttermilk?
You can mix regular milk with a teaspoon of vinegar or lemon juice and let it sit for a few minutes as a buttermilk substitute.
3. How can I tell when the cake is done?
A toothpick inserted into the center of the cake should come out with moist crumbs, but not wet batter. If it comes out clean, the cake may be overcooked.

Lemon Blueberry Sheet Cake
Ingredients
Method
- Preheat the oven to 350 degrees F. Grease a 9x13 baking dish and line it with parchment paper, leaving some overhang on the sides for easy removal.
- In a medium mixing bowl, whisk together the dry ingredients: flour, baking powder, baking soda, and salt. Set aside.
- In a stand mixer or using a hand mixer, cream together the sugar and softened butter until light and fluffy.
- Add the eggs, vanilla extract, and buttermilk to the mixture, mixing on low until everything is well combined.
- Gradually add the dry ingredients, mixing until no streaks of flour remain. Then mix in the lemon juice and zest.
- Gently stir in the blueberries using a spatula.
- Pour the batter into the prepared baking dish and bake for 40-45 minutes, or until a toothpick comes out with moist crumbs.
- Allow the cake to cool completely. You can lift it out of the pan before drizzling, or leave it in the dish to serve.
- For the glaze, combine the powdered sugar and lemon juice, then pour it over the cooled cake. Let the glaze harden, and garnish with fresh fruit before serving.