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Ingredients
- ½ pound unsalted butter, at room temperature
- 3 ½ cups sugar, divided
- 3 cups all-purpose flour, divided
- ⅛ teaspoon kosher salt
- 6 extra-large eggs, room temperature
- 2 tablespoons grated lemon zest (4 to 6 lemons)
- 1 cup freshly squeezed lemon juice
- Confectioners' sugar, for dusting
Steps
- Preheat oven to 350°F.
- For the crust, cream the butter and ½ cup sugar until light in color in the bowl of an electric mixer fitted with the paddle attachment. Combine 2 cups flour and salt with the butter mixture until combined.
- Place the dough onto a well-floured work surface and gather into a ball. Flatten the dough with floured hands and press into a 9 x13-inch baking dish, building up a ½-inch edge on all sides. Chill for 15 minutes.
- Bake the crust 18-20 minutes, until very lightly browned. Let cool on a wire rack.
- Whisk eggs, sugar, lemon zest, lemon juice, and remaining flour together. Pour over the crust and bake 30-35 minutes or until the filling is set.
- Let cool to room temperature.
- Cut into squares and dust with confectioners' sugar.