Introduction & Inspiration
Bright, zesty, and bursting with flavor, these Lemon Raspberry Bars are one of my favorite desserts to bake when I want something both refreshing and indulgent.
The tartness of fresh lemon paired with the sweet tang of raspberry puree creates a custard layer that’s as beautiful as it is flavorful. Sitting on top of a buttery shortbread base, these bars offer the perfect balance of creamy, fruity, and crisp.
I love making these bars in the spring and summer when berries are fresh and the sunshine calls for something vibrant. But honestly, I’d bake these year-round—because they’re just that good.
They make a stunning addition to any brunch table, bake sale, or casual gathering. And they’re surprisingly easy to prepare, even with their impressive layered look.
Nostalgic Appeal
Raspberries have always been a nostalgic ingredient for me. Growing up, we had a small bush in our backyard, and each summer, my siblings and I would sneak out with stained fingers and fill our hands with the sweet red gems.
Lemon bars were a family classic too—especially around holidays. The sharp citrusy flavor was always a crowd-pleaser, and I remember the way powdered sugar dusted our noses and fingers as we devoured slice after slice.
Combining these two memories into one dessert just made sense. The result is something new but deeply familiar—like a warm hug from your childhood, wrapped in buttery pastry.
It’s the kind of treat that brings people together. Whether you serve it to friends or enjoy it with tea on a quiet afternoon, these bars feel like a little celebration.
Homemade Focus
While some lemon bars rely on pre-made filling or shortcuts, this recipe is all about doing it from scratch—and trust me, it makes a difference.
The shortbread base is simple but divine. It’s buttery, soft, and slightly crisp around the edges, creating the ideal foundation for the bright, silky filling.
The lemon raspberry layer is where things get magical. You make your own raspberry puree and gently reduce it to concentrate the flavor, giving the custard a natural berry note without overpowering the lemon.
And because every component is made by hand, you have full control over the flavor, sweetness, and texture. That’s the beauty of homemade baking—it’s personal, flavorful, and always worth the time.
Flavor Goal
The goal here is bold, clean flavor. You want the lemon to sing, the raspberry to deepen it, and the shortbread to cradle it all in buttery perfection.
The lemon juice provides that punchy, citrus brightness that makes each bite refreshing and sharp. It cuts through the richness and gives the bars their signature tang.
The reduced raspberry puree adds complexity and just the right amount of fruitiness. It softens the tartness of the lemon and brings a vibrant pink hue to the custard layer.
The shortbread base rounds everything out. It’s tender but firm enough to hold the layers, and its mild sweetness complements the fruit without competing with it.
Ingredient Insights
Raspberries, fresh or frozen, are the heart of the raspberry puree. Reducing them concentrates their flavor and removes excess liquid, so your custard doesn’t get runny.
All-purpose flour creates the structure for the shortbread. Combined with butter, sugar, and cornstarch, it bakes into a tender crust that’s easy to slice.
Granulated sugar is used in both the base and the filling. It sweetens and balances the sharpness of the lemon while helping the custard set.
Cornstarch thickens the lemon layer and ensures a smooth, stable custard. It also keeps the bars from weeping or getting soggy over time.
Salt enhances the buttery richness of the crust and balances the sweetness of the filling. Even a little makes a big difference.
Unsalted butter, melted into the crust, creates that signature shortbread crumble. It adds richness and ensures the base is sturdy but not dry.
Eggs bind the lemon raspberry custard together. They help it set properly while keeping it creamy and smooth.
Lemon juice, freshly squeezed, gives the filling its tart zing. It’s the bold backbone of the dessert and a must for true lemon flavor.
Lemon zest is optional but recommended. It adds aroma and a deeper citrus layer that enhances the juice.
Essential Equipment
You’ll need a 9×13-inch baking pan for this recipe. It gives you the perfect depth and size for evenly baked bars.
Parchment paper makes it easier to lift the bars out of the pan after chilling. Leave an overhang for easy slicing later.
A blender or food processor is essential for making the raspberry puree. It smooths out the berries before you strain them.
You’ll also need a fine metal sieve to remove the seeds from the puree, especially if you want a silky custard texture.
A whisk and mixing bowls help bring everything together by hand, while a spatula ensures you get every bit of batter and filling into the pan.
List of Ingredients with Measurements
Raspberry Puree:
- 2 cups raspberries (250g), fresh or frozen
Shortbread Base:
- 2 ¼ cups all-purpose flour (281g)
- ½ cup granulated sugar (100g)
- 1 tablespoon cornstarch
- ¼ teaspoon salt
- 1 cup unsalted butter (226g), melted
Lemon Raspberry Layer:
- 1 ½ cups granulated sugar (300g)
- â…“ cup cornstarch (40g)
- 6 large eggs
- ¼ cup reduced raspberry puree (60 ml), from step 1
- ¾ cup freshly squeezed lemon juice (180 ml)
Step-by-Step Instructions
Step 1: Make the Raspberry Puree
Add raspberries to a blender or food processor and blend until smooth. Pour the puree through a metal sieve to remove the seeds.
Transfer the seedless puree to a saucepan. Simmer over medium heat until it reduces to about ¼ to ⅓ cup. This will take 15–20 minutes.
Let the puree cool completely while you prepare the base and filling. Cooling is important so it doesn’t scramble the eggs in the custard.
Step 2: Prepare the Shortbread Base
Preheat your oven to 325°F (160°C). Line a 9×13-inch pan with parchment paper, leaving extra hanging over the sides.
In a bowl, whisk together flour, sugar, cornstarch, and salt. Stir in the melted butter until the dough is thick and crumbly.
Press the mixture evenly into the prepared pan, creating a slight edge around the perimeter. This helps contain the filling later.
Bake for 20–25 minutes, until set and lightly golden. Remove from the oven and gently prick the top with a fork—just the surface, not all the way down.
Step 3: Prepare the Lemon Raspberry Layer
While the crust bakes, whisk together sugar and cornstarch in a large bowl. This helps eliminate any lumps before the wet ingredients go in.
Add the eggs and whisk until smooth. Then add the cooled raspberry puree and lemon juice, mixing until fully combined.
The mixture will be quite liquid, but don’t worry—it will set as it bakes. Avoid overwhisking to keep the custard from becoming foamy.
Step 4: Bake the Bars
Pour the lemon raspberry mixture over the warm shortbread crust. Tilt the pan gently to distribute it evenly.
Return to the oven and bake at 325°F (160°C) for another 20–25 minutes. The top should look set, not jiggly, and just slightly glossy.
Cool the bars at room temperature for at least 1 hour. Then chill them in the fridge for 2–3 hours to help them firm up completely.
Step 5: Slice and Serve
Once fully chilled, use the parchment paper to lift the bars out of the pan. Transfer to a cutting board.
Slice with a sharp knife, wiping it clean between each cut for neat, even bars. Dust with powdered sugar just before serving if desired.
Store leftovers in an airtight container in the fridge for up to 4 days. They hold their shape and flavor beautifully.
Troubleshooting
Bars too runny after baking?
They may need more time. Make sure the top is fully set before removing from the oven. Chilling also helps firm them up.
Crust crumbling or too soft?
Be sure to press it firmly into the pan and allow it to cool slightly before adding the custard. Melted butter should be well incorporated.
Custard cracked on top?
This can happen if the filling is overbaked. Start checking at the 20-minute mark and pull them as soon as the center no longer jiggles.
Cuts not clean?
Use a sharp knife and clean it between cuts. Chilling the bars for several hours also makes slicing much easier.
Tips and Variations
Try adding a teaspoon of lemon zest to the custard for extra brightness. It deepens the citrus flavor and adds a floral touch.
Swap raspberries for blackberries or mixed berries for a new spin. Just follow the same reduction process.
For extra crunch, top with a layer of sliced almonds before baking. They toast beautifully and complement the citrus.
Make a gluten-free version using a 1:1 gluten-free flour blend. It works well in shortbread and still gives a tender base.
Serving and Pairing Suggestions
These bars are perfect served chilled with a dusting of powdered sugar. The cool custard and buttery crust are irresistible on a warm day.
They pair wonderfully with tea, lemonade, or a citrusy cocktail like a lemon spritz or raspberry mojito.
Serve as part of a dessert platter with other fruit bars, cookies, or small tarts. They also look stunning as a stand-alone centerpiece.
For a brunch setting, offer with fresh fruit and whipped cream on the side for a customizable finish.
Nutritional Information (approximate, per bar based on 24 slices)
- Calories: 215
- Fat: 10g
- Saturated Fat: 6g
- Carbohydrates: 28g
- Sugar: 18g
- Protein: 3g
- Fiber: 1g
- Sodium: 75mg
Values may vary depending on portion size and exact ingredients used.
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Lemon Raspberry Bars
Description
Bright, zesty, and bursting with flavor, these Lemon Raspberry Bars are one of my favorite desserts to bake when I want something both refreshing and indulgent
Ingredients
Raspberry Puree:
-
2 cups raspberries (250g), fresh or frozen
Shortbread Base:
-
2 ¼ cups all-purpose flour (281g)
-
½ cup granulated sugar (100g)
-
1 tablespoon cornstarch
-
¼ teaspoon salt
-
1 cup unsalted butter (226g), melted
Lemon Raspberry Layer:
-
1 ½ cups granulated sugar (300g)
-
â…“ cup cornstarch (40g)
-
6 large eggs
-
¼ cup reduced raspberry puree (60 ml), from step 1
-
¾ cup freshly squeezed lemon juice (180 ml)
Instructions
Step 1: Make the Raspberry Puree
Add raspberries to a blender or food processor and blend until smooth. Pour the puree through a metal sieve to remove the seeds.
Transfer the seedless puree to a saucepan. Simmer over medium heat until it reduces to about ¼ to ⅓ cup. This will take 15–20 minutes.
Let the puree cool completely while you prepare the base and filling. Cooling is important so it doesn’t scramble the eggs in the custard.
Step 2: Prepare the Shortbread Base
Preheat your oven to 325°F (160°C). Line a 9×13-inch pan with parchment paper, leaving extra hanging over the sides.
In a bowl, whisk together flour, sugar, cornstarch, and salt. Stir in the melted butter until the dough is thick and crumbly.
Press the mixture evenly into the prepared pan, creating a slight edge around the perimeter. This helps contain the filling later.
Bake for 20–25 minutes, until set and lightly golden. Remove from the oven and gently prick the top with a fork—just the surface, not all the way down.
Step 3: Prepare the Lemon Raspberry Layer
While the crust bakes, whisk together sugar and cornstarch in a large bowl. This helps eliminate any lumps before the wet ingredients go in.
Add the eggs and whisk until smooth. Then add the cooled raspberry puree and lemon juice, mixing until fully combined.
The mixture will be quite liquid, but don’t worry—it will set as it bakes. Avoid overwhisking to keep the custard from becoming foamy.
Step 4: Bake the Bars
Pour the lemon raspberry mixture over the warm shortbread crust. Tilt the pan gently to distribute it evenly.
Return to the oven and bake at 325°F (160°C) for another 20–25 minutes. The top should look set, not jiggly, and just slightly glossy.
Cool the bars at room temperature for at least 1 hour. Then chill them in the fridge for 2–3 hours to help them firm up completely.
Step 5: Slice and Serve
Once fully chilled, use the parchment paper to lift the bars out of the pan. Transfer to a cutting board.
Slice with a sharp knife, wiping it clean between each cut for neat, even bars. Dust with powdered sugar just before serving if desired.
Store leftovers in an airtight container in the fridge for up to 4 days. They hold their shape and flavor beautifully.
Recipe Summary and Q&A
Can I use frozen raspberries?
Yes! Thaw them first if needed and follow the same steps for pureeing and reducing.
Do I have to strain the raspberry puree?
No, but it’s highly recommended for a smooth custard. Leaving the seeds in changes the texture significantly.
Can I freeze these bars?
Yes! Wrap tightly and freeze for up to 2 months. Thaw overnight in the fridge before slicing.
How long do they last?
They’ll keep in the fridge for about 4 days. Store in a covered container to keep them fresh.
Can I make this with bottled lemon juice?
Fresh is best for flavor and brightness, but bottled can be used in a pinch. Add extra zest to boost flavor.