6ounces(12 tablespoons) unsalted butter, cold and cut into ½-inch pieces
For the Filling
6extra-large eggs
3cupsgranulated sugar
1cupplus 2 tablespoons freshly squeezed lemon juice
½cupunbleached all-purpose flour
Confectioners' sugar for dusting
Instructions
For the Crust
Preheat the oven to 325ºF. In the bowl of a stand mixer fitted with the paddle attachment, combine the flour, sugar, and salt. Add the butter and continue to mix until the butter is the size of small peas, about 1-2 minutes (the mixture will be dry). Gently press the mixture evenly onto the bottom of a 9-x13-inch baking pan. Bake until golden brown, about 20-25 minutes. Let cool to room temperature. Reduce the oven temperature to 300ºF.
For the Filling
In a large bowl, whisk together the eggs and sugar until smooth. Stir in the lemon juice and then the flour. Pour the filling on top of the cooled crust. Bake until the filling is set, about 40-45 minutes. Let cool to room temperature and then place in the refrigerator and chill for at least 1 hour, or overnight, before cutting into squares. Cut into 2-inch squares and dust the tops with confectioners' sugar. Store in an airtight container in the refrigerator for up to 5 days. Enjoy!