Old-Fashioned Easy Blueberry Lemon Bars Recipe
Blueberry lemon bars are a summery treat with a buttery shortbread crust, tangy lemon filling, and juicy blueberries on top. This easy dessert is a great way to use up leftovers like extra fresh berries, lemon juice from another recipe, or butter from baking day.
How to Make Blueberry Lemon Bars
This delicious recipe combines the fresh lemon flavor of classic lemon bars with bursts of sweet blueberries. If you’ve made a Lemon Nothing Bundt Cake or a Dutch Oven Blueberry Bread, you may already have the key ingredients on hand for these lemon blueberry bars.
Ingredients
For the crust:
- 1⁄2 cup (113 g) butter, at room temperature
- 1⁄2 cup (100 g) sugar
- 1 1⁄2 cups (190 g) all-purpose flour
- 1 teaspoon vanilla extract
- Pinch of salt
- 2 teaspoons lemon zest
For the filling:
- 1 cup (150 g) fresh blueberries
- 1 cup (240 ml) fresh lemon juice
- 6 eggs
- 1⁄2 cup (120 ml) condensed milk
- 1⁄4 cup (50 g) sugar
- 3 tablespoons flour or cornstarch
Directions
For the best results, start with room-temperature ingredients. This helps create a smooth lemon layer and prevents the crust from becoming dense.
- Prepare the crust: In a large bowl or in the bowl of a food processor with a paddle attachment, combine the butter, sugar, lemon zest, vanilla extract, flour, and salt. Mix on medium speed until coarse crumbs form, then press the dough evenly into the bottom of the prepared pan lined with parchment paper. Bake at 350°F (180°C) for 8–10 minutes until the crust bakes to a light golden color.
- Prepare the filling: In a medium bowl, whisk the condensed milk, lemon juice, and eggs until smooth. Add sugar and flour mixture, whisking until no lumps remain.
- Assemble and bake: Pour the filling over the cooled crust. Evenly sprinkle blueberries across the top, then bake at 350°F (180°C) for about 20 minutes or until the center is set.
- Cool and serve: Cool on a wire rack, then cover with plastic wrap and refrigerate for at least two hours of chilling time before slicing into small squares. Dust with confectioners’ sugar just before serving.
For success tips, avoid overmixing the crust dough, strain the lemon juice to remove pulp, and refrigerate before cutting to help the bars hold their shape.
Why This is a Good Recipe for Leftovers
This is one of the best dessert ideas when you have a lot of things to use up from other recipes. Leftover fresh blueberries from making cottage cheese pancakes or other berry bakes are perfect here.
Lemon juice and zest from another dessert like old-fashioned egg custard pie won’t go to waste, and you can even use softened butter from earlier baking sessions. Store extra bars in an airtight container in the refrigerator for up to four days.
FAQs for Lemon Blueberry Bars Recipe
Have questions about making blueberry lemon bars? Here are the most common ones—leave yours in the comments if you don’t see it here.
Can I use frozen blueberries instead of fresh?
Yes, but for best results, thaw and pat them dry first to avoid excess moisture in the lemon layer. Frozen berries can make the bars too wet if added directly from the freezer.
Can I freeze blueberry lemon bars?
Absolutely. Wrap cooled bars tightly in plastic wrap, then place in an airtight container or freezer bag. They keep well for up to three months—thaw in the refrigerator before serving. Learn different ways to preserve blueberries so you can make the most of this delicious end-of-summer fruit.
What’s the difference between these and lemon blueberry cheesecake bars?
Cheesecake bars include a creamy lemon cheesecake layer made with cream cheese and sometimes sour cream. These bars are closer to classic lemon bars, with a tangy citrus custard and a shortbread crust rather than a graham cracker crust.
A Classic Blueberry Dessert
These blueberry lemon bars combine sweet-tart flavors with a buttery crust for an easy dessert that gets rave reviews every time. Whether it’s the first time you’ve made them or the last time you had extra fresh berries, this recipe is a simple, delicious way to turn leftovers into the best summery treat.
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Classic Blueberry Lemon Bars Recipe with a Shortbread Crust
Ingredients
For the crust:
- 1/2 cup 113 g butter, at room temperature
- 1/2 cup 100 g sugar
- 1 1/2 cups 190 g all-purpose flour
- 1 teaspoon vanilla extract
- Pinch of salt
- 2 teaspoons lemon zest
For the filling:
- 1 cup 150 g fresh blueberries
- 1 cup 240 ml fresh lemon juice
- 6 eggs
- 1/2 cup 120 ml condensed milk
- 1/4 cup 50 g sugar
- 3 tablespoons flour or cornstarch
Instructions
Prepare the crust:
- In a bowl, add the butter, sugar, lemon zest, vanilla extract, the flour and salt,and begin incorporating the dough by hand, breaking down the butter until a crumbly texture forms, then pressing it together. You can also use a food processor.
- Transfer the dough to a 9 x 13-inch baking pan lined with parchment paper.
- Press and spread the dough evenly, ensuring it is thin.
- Bake in a preheated oven at 350°F (180°C) for 8-10 minutes, or until the edges are lightly golden.
Prepare the filling:
- In a bowl, add the condensed milk, lemon juice and eggs and beat until combined.
- Add the sugar and flour, mix until there are no lumps.
Bake and cool:
- Pour the mixture over the previously baked crust.
- Top the mixture with fresh blueberries, distributing them throughout the pan.
- Bake at 350°F (180°C) for 10 minutes, or until the center is firm to the touch.
- Allow to cool completely at room temperature, then refrigerate for at least 2 hours before cutting into portions.
Serve:
- Dust with powdered sugar and cut into squares.
- Enjoy chilled for the best texture and flavor.
