🍋🫐 Lemon Blueberry Bars
Buttery shortbread crust, juicy blueberries, and a bright, creamy lemon filling come together in these irresistible Lemon Blueberry Bars.
These easy dessert bars have everything you want in a fruity treat: a crisp, buttery base, a sweet-tart blueberry layer, and a refreshing lemon flavor that keeps every bite balanced.
They’re perfect for spring and summer gatherings, afternoon tea, bake sales, picnics, potlucks, or simply enjoying with a cup of coffee.
⏱️ Recipe Information
Prep Time: 20 minutes
Bake Time: 40–50 minutes
Cooling & Chilling Time: 2 hours
Total Time: About 3 hours
Yield: 16 bars
Difficulty: Easy
Method: Oven-Baked
Pan: 8 × 8-inch square pan
🛒 Ingredients
🧈 For the Crust & Crumble
- 1 cup (226 g) unsalted butter, melted
- ½ cup (100 g) granulated sugar
- 2 cups (240 g) all-purpose flour
- ¼ teaspoon salt
🍋🫐 For the Lemon Blueberry Filling
- 2 cups (300 g) fresh blueberries
- ¾ cup (150 g) granulated sugar
- ¼ cup (30 g) all-purpose flour
- 2 large eggs
- ½ cup (120 ml) fresh lemon juice
- 1 tablespoon finely grated lemon zest
- ½ teaspoon vanilla extract
- ¼ teaspoon salt
Optional Finish
- Powdered sugar, for dusting
- Fresh blueberries
- Thin lemon slices
- Lemon zest
👩🍳 Instructions
🧈 Prepare the Crust and Crumble
1. Prepare the Oven and Pan
Preheat your oven to 350°F (175°C).
Line an 8 × 8-inch square baking pan with parchment paper, leaving some overhang on two sides for easy removal.
Lightly grease the parchment.
2. Make the Crust Mixture
In a large bowl, combine the melted butter, granulated sugar, flour, and salt.
Stir until the mixture forms a soft, crumbly dough.
Reserve approximately ¾ cup of the mixture for the crumble topping.
3. Press the Crust
Transfer the remaining mixture to the prepared pan.
Press it firmly and evenly across the bottom.
Use the back of a measuring cup or the bottom of a glass to create a compact, even layer.
4. Pre-Bake the Crust
Bake for 12–15 minutes, or until the edges are lightly golden.
Remove from the oven and set aside.
The crust doesn’t need to be fully browned because it will bake again with the filling.
🍋🫐 Prepare the Filling
5. Combine the Dry Ingredients
In a medium bowl, whisk together the sugar, flour, and salt.
6. Add the Eggs and Lemon
Add the eggs, fresh lemon juice, lemon zest, and vanilla extract.
Whisk until the mixture is smooth and well combined.
7. Add the Blueberries
Gently fold in the blueberries.
If using frozen blueberries, don’t thaw them first. Add them frozen to prevent excessive liquid from being released.
🫐 Assemble the Bars
8. Pour Over the Crust
Pour the lemon-blueberry filling over the warm pre-baked crust.
Spread the blueberries evenly across the surface.
9. Add the Crumble
Take the reserved crust mixture and crumble it into small pieces.
Sprinkle evenly over the top of the filling.
Some of the blueberry filling can remain visible—that gives the finished bars a beautiful appearance.
🔥 Bake
10. Bake Until Set
Return the pan to the oven.
Bake for approximately 30–35 minutes, or until the filling is mostly set and the crumble is lightly golden.
The center may have a very slight wobble when removed from the oven, but it shouldn’t look liquid.
11. Cool Completely
Place the pan on a wire rack.
Allow the bars to cool completely at room temperature, approximately 1 hour.
12. Chill
Once cooled, refrigerate for at least 1 hour before cutting.
Chilling helps the lemon-blueberry filling become firm enough for clean slices.
For the neatest bars, chill overnight.
🔪 Cut and Serve
13. Remove From the Pan
Use the parchment-paper overhang to lift the chilled dessert from the pan.
Place it on a cutting board.
14. Slice
Use a sharp knife to cut the dessert into 16 squares.
For very clean cuts, wipe the knife between slices.
15. Garnish
Dust lightly with powdered sugar.
Add fresh blueberries and a little grated lemon zest if desired.
Serve chilled or allow the bars to sit at room temperature for approximately 10–15 minutes before serving.
⭐ Chef’s Tips
Use fresh lemon juice
Freshly squeezed lemon juice gives the filling a much brighter, cleaner flavor than bottled juice.
Zest before juicing
It’s much easier to zest the lemon while it’s still whole and firm.
Don’t overmix the filling
Whisk just until smooth. Excessive mixing can incorporate too much air into the eggs.
Don’t overbake
The filling should be set around the edges with only a slight softness in the center. It will firm as it cools.
Chill before cutting
This is the secret to getting clean, bakery-style squares rather than a messy filling.
Use parchment paper
The parchment overhang makes it much easier to remove the entire slab from the pan.
🫐 Easy Variations
Raspberry Lemon Bars
Replace half of the blueberries with fresh raspberries.
Mixed Berry Bars
Use a combination of blueberries, raspberries, and blackberries.
Strawberry Lemon Bars
Replace the blueberries with finely chopped strawberries.
Lemon Coconut Bars
Add ½ cup shredded sweetened coconut to the crumble topping.
Almond Lemon Blueberry Bars
Add ½ teaspoon almond extract to the filling and sprinkle sliced almonds over the crumble.
White Chocolate Blueberry Bars
Fold ½ cup white chocolate chips into the crumble topping.
Cheesecake-Style Bars
Add 4 oz (113 g) softened cream cheese to the lemon filling for a richer, creamier texture.
🍋 Serving Suggestions
These Lemon Blueberry Bars are delicious served with:
- Whipped cream
- Vanilla ice cream
- Fresh blueberries
- Fresh raspberries
- Lemon curd
- Powdered sugar
- A drizzle of white chocolate
They’re especially refreshing when served slightly chilled.
☕ Perfect for Tea Time
Serve these bars alongside:
- Black tea
- Earl Grey
- Green tea
- Iced tea
- Coffee
- Lemonade
The bright lemon flavor pairs beautifully with both hot and cold drinks.
🧊 Storage
Because the filling contains eggs and fresh fruit, store the bars in an airtight container in the refrigerator.
They will keep well for approximately 4–5 days.
Place parchment paper between layers if stacking.
❄️ Freezing
Cut the completely chilled bars into individual portions.
Wrap each piece tightly in plastic wrap, then place in a freezer-safe container.
Freeze for up to 2 months.
Thaw overnight in the refrigerator.
Dust with fresh powdered sugar just before serving.
🍋🫐✨ Final Result
These Lemon Blueberry Bars are buttery, fruity, bright, and wonderfully tender.
The crumbly shortbread crust and golden topping contrast beautifully with the sweet-tart blueberry and fresh lemon filling, creating a dessert that’s rich enough to satisfy but refreshing enough to keep you coming back for another piece.
Buttery crust + juicy blueberries + vibrant lemon = the perfect dessert bar! 🍋🫐💛✨