Lemon Raspberry Swirl Bars (Printable)

Tangy lemon meets sweet raspberry swirls on a buttery shortbread base. Perfect for gatherings or afternoon treats.

# What You'll Need:

→ Shortbread Crust

01 - 1 cup all-purpose flour
02 - 1/4 cup powdered sugar
03 - 1/4 teaspoon salt
04 - 1/2 cup unsalted butter, cold and cubed

→ Lemon Filling

05 - 1 cup granulated sugar
06 - 2 large eggs
07 - 1/4 cup all-purpose flour
08 - 1/2 cup freshly squeezed lemon juice
09 - 1 tablespoon lemon zest
10 - 1/4 teaspoon salt

→ Raspberry Swirl

11 - 1/2 cup fresh raspberries
12 - 2 tablespoons granulated sugar
13 - 1 teaspoon lemon juice

→ Dusting

14 - Powdered sugar

# Steps:

01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving overhang for easy removal.
02 - In a medium bowl, mix flour, powdered sugar, and salt. Cut in cold butter using a pastry cutter or fork until mixture resembles coarse crumbs. Press evenly into prepared pan.
03 - Bake crust for 18–20 minutes until lightly golden. Remove from oven but keep oven on.
04 - Mash raspberries with sugar and lemon juice in a small saucepan. Warm over medium heat for 3–4 minutes, stirring until raspberries break down and mixture thickens slightly. Strain through fine mesh sieve to remove seeds.
05 - Whisk together granulated sugar and eggs until smooth. Add flour, lemon juice, lemon zest, and salt; whisk until fully combined.
06 - Pour lemon filling over warm crust. Drop teaspoons of raspberry sauce over the lemon layer. Use a toothpick or knife to gently swirl the raspberry sauce into the lemon filling for a marbled effect.
07 - Bake for 20–22 minutes until center is just set and no longer jiggly.
08 - Cool completely in the pan on a wire rack. Chill in refrigerator for at least 2 hours before slicing into bars.
09 - Dust with powdered sugar before serving, if desired.

# Expert Tips:

01 -
  • The tart raspberry cutting through sweet lemon creates the kind of flavor combination that makes people pause mid bite
  • That buttery shortbread crust holds everything together while adding the most perfect crumbly texture
  • These look fancy enough for a bridal shower but are simple enough for a Tuesday afternoon craving
02 -
  • Warm crust is not optional, it prevents the filling from seeping underneath and creating a soggy bottom layer
  • Over swirling will muddy that beautiful pink and yellow pattern, so just three or four gentle passes with your knife
  • These need the full chilling time or they will slide apart when you try to cut them
03 -
  • Room temperature ingredients prevent the filling from seizing up and leaving tiny lumps
  • The sieve step takes extra effort but guarantees that velvety smooth raspberry ribbon throughout

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