# What You'll Need:
→ Shortbread crust
01 - 1 cup unsalted butter, softened
02 - 1/2 cup granulated sugar
03 - 2 cups all-purpose flour
04 - 1/4 teaspoon fine sea salt
→ Lemon curd layer
05 - 1 cup granulated sugar
06 - 3 large eggs
07 - 2/3 cup freshly squeezed lemon juice (about 3–4 lemons)
08 - 2 tablespoons lemon zest (from 2 lemons)
09 - 1/4 cup all-purpose flour
→ Blueberry topping
10 - 1 cup fresh blueberries
11 - 2 tablespoons granulated sugar (optional)
12 - Powdered sugar for dusting (optional)
# Directions:
01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a bowl, cream softened butter with 1/2 cup sugar until light and fluffy. Incorporate flour and salt until just combined. Press dough evenly into prepared pan.
03 - Bake crust 18–20 minutes until edges turn lightly golden. Remove from oven but keep oven on.
04 - Whisk sugar and eggs until smooth. Add lemon juice and zest, then whisk flour in until no lumps remain.
05 - Pour lemon curd mixture over hot crust. Evenly distribute blueberries atop, optionally sprinkling with 2 tablespoons sugar for extra sweetness.
06 - Return pan to oven and bake 18–20 minutes until lemon curd is set but slightly jiggles in the center.
07 - Cool completely in pan on wire rack. For cleaner slices, chill at least 2 hours before cutting.
08 - Dust with powdered sugar if desired and cut into 16 squares.