Salty-Tangy Preserved Lemon Bars

 

1 3/4 cups (225 grams) all-purpose flour

1/4 cup (50 grams) granulated sugar

1/4 tsp. kosher salt

10 T. (1 stick plus 2 T.) unsalted butter, cut into cubes (remove from fridge 10-20 minutes before baking)

Filling

1/4 cup (70 grams) preserved lemon paste (or 1/4 cup of seeded, puréed whole preserved lemons)

2 T. lemon zest (from about 2 lemons)

6 T. fresh lemon juice (from about 2 lemons)

2 large eggs

2 large egg yolks

3/4 cup (150 grams) granulated sugar

3 T. (25 grams) all-purpose flour

Powdered sugar, for serving (optional)

Flaky salt, for serving (optional)

 

Heat the oven to 325ºF and line an 8×8-inch square baking pan with parchment paper, leaving an overhang on all sides. (Save parchment paper by cutting one sheet several inches larger than the pan, cutting a slit in each corner, then pressing the paper into the pan.) In a medium bowl, use your fingers to combine the flour, sugar, and salt, then work in the butter pieces with your fingers, until it forms into a crumbly mass. It may not all stick together, but if you can press together a handful and it holds its shape, you’re good to go. Dump the dough into the prepared pan and hang onto the bowl. Firmly press the dough into the pan in an even layer. Use a fork to prick holes over the entire surface. Bake until the shortbread is lightly golden brown, 20 to 25 minutes. Meanwhile, make the filling: Place the preserved lemon paste, lemon zest and juice, whole eggs and egg yolk, sugar, and flour in the reserved bowl and whisk furiously until totally smooth. Reduce the oven temperature to 300ºF. Pull out the oven rack the crust is baking on, and carefully pour the filling over the crust. Gently push the oven rack back and bake until the filling is set and just barely jiggles in the center, about 20 minutes. Let the pan cool to room temperature, then transfer to the refrigerator to cool completely, at least 3 hours, but overnight is best for a clean cut. Pull out the bars from the pan by the parchment overhang, place on a cutting board, and slice into 16 squares (or 32 triangles). Dust with powdered sugar and sprinkle over flaky salt (if using).