Bright, tangy lemon meets bursts of sweet blueberries in this easy sheet cake that’s perfect for gatherings or a cozy weekend treat. Simple to make and gorgeous to serve, every bite feels like sunshine on a plate.
Lemon Blueberry Sheet Cake
Equipment
- 1 Sheet pan about 9x13 inch
- 1 hand mixer or stand mixer for creaming
- 2 Mixing Bowls
Ingredients
- 2 cups all-purpose flour plus 1 tsp for coating blueberries
- 2 tsp baking powder
- 0.5 tsp salt
- 0.75 cup unsalted butter softened
- 1.25 cups granulated sugar
- 3 eggs room temperature
- 0.75 cup plain yogurt or sour cream
- 2 lemons, zested and juiced about 2 lemons total
- 2 tsp vanilla extract alcohol-free, if desired
- 1.5 cups blueberries, fresh or frozen do not thaw if frozen
- 1 cup powdered sugar for glaze
- 2 tbsp fresh lemon juice for glaze
Instructions
- Cream together the softened butter and granulated sugar until light and fluffy. Beat in the eggs, yogurt (or sour cream), vanilla extract, lemon zest, and lemon juice. In a separate bowl, whisk together the flour, baking powder, and salt. Fold the dry ingredients into the wet until just combined. Toss the blueberries with 1 teaspoon flour and gently fold them into the batter.
- Spread the batter evenly into a greased 9x13-inch sheet pan. Bake at 350°F (175°C) for 25 to 30 minutes, or until golden on top and a toothpick comes out clean from the center.
- Let the cake cool fully in the pan. For the glaze, whisk together powdered sugar and 2 tablespoons fresh lemon juice until smooth. Drizzle the glaze over the cooled cake before cutting into squares.
Notes
- Toss blueberries in a bit of flour before adding to the batter to help prevent sinking.
- Do not overmix the batter for the lightest crumb.
- Store cake tightly covered at room temperature up to 2 days, or refrigerated up to 5 days. Freeze slices up to 2 months; thaw at room temp.
Why You’ll Love This Lemon Blueberry Sheet Cake
This cake is loaded with lemon flavor and juicy blueberries, creating a beautifully moist texture in every slice. It’s wonderful for just about any occasion, from brunches to birthdays. Plus, sheet cakes are incredibly fuss-free to decorate and serve.
Lemon Blueberry Sheet Cake Ingredients & Substitutions
- All-purpose flour – Gives structure to the cake. You can swap with a 1:1 gluten-free blend if needed.
- Fresh or frozen blueberries – Both work great. If using frozen, no need to thaw.
- Granulated sugar – Sweetens the cake and helps with moisture.
- Eggs – Room temperature is best for even mixing.
- Plain yogurt or sour cream – Adds richness and extra moisture.
- Fresh lemon juice and zest – Provides that signature citrus brightness.
- Baking powder
- Salt
- Unsalted butter – Softened, or try a neutral oil if you’re out of butter.
- Alcohol-free vanilla extract – Adds warmth and depth.
- Powdered sugar – For the simple lemon glaze on top.
Step-by-Step Instructions to Make Lemon Blueberry Sheet Cake
Step 1: Prepare the Batter
Cream together the butter and sugar until light and fluffy. Beat in the eggs, yogurt, vanilla, lemon zest, and juice. Fold in the dry ingredients until just combined, then gently stir in the blueberries.
Step 2: Bake
Spread the batter evenly into a greased sheet pan. Bake at 350°F (175°C) for 25 to 30 minutes, or until golden and a toothpick comes out clean.
Step 3: Cool and Glaze
Let the cake cool fully. Whisk together powdered sugar and more fresh lemon juice, then drizzle the glaze over the top before cutting into squares.
Tips for Success
- Toss blueberries in a bit of flour before adding to the batter to help prevent sinking.
- Do not overmix the batter for the lightest crumb.
- Test for doneness in the center, as sheet cakes bake quickly.
Variations of Lemon Blueberry Sheet Cake
- Add a sprinkle of sliced almonds on top before baking for crunch.
- Swap blueberries for raspberries or blackberries for a different twist.
- Try a lemon cream cheese frosting instead of the glaze for extra richness.
Serving Suggestions: What to Pair with Lemon Blueberry Sheet Cake
- Fresh berries on the side
- A dollop of whipped cream or a spoonful of plain yogurt
- Hot tea or an iced lemonade
Storage & Reheating Instructions
- Store leftover cake tightly covered at room temperature up to 2 days, or in the fridge for up to 5 days.
- To freeze, wrap individual pieces and keep up to 2 months. Thaw at room temperature.
- If you like your cake warm, microwave single slices for about 10 seconds.
Memories Made Around the Table
Some of our favorite memories are made around this cake, from sharing it at family brunches to packing slices for a sunny picnic. The delightful blend of lemon and blueberry always brings smiles and requests for seconds.
FAQs
Can I use frozen blueberries?
Yes, you can use fresh or frozen blueberries. No need to thaw frozen ones before mixing into the batter.
Why did my blueberries sink to the bottom?
Tossing blueberries in flour helps suspend them in the batter. Pouring all the batter in gently also helps.
Can I double this recipe?
Absolutely, just use a larger sheet pan and keep an eye on the baking time. It may need a few extra minutes.
Final Thoughts
This Lemon Blueberry Sheet Cake is a crowd-pleaser that’s simple, bright, and brimming with flavor. Enjoy every zesty, berry-filled bite with the ones you love.