In a large bowl, combine the flour, powdered sugar, and salt.

Cut in the cold butter using a pastry blender or your fingertips until the mixture resembles coarse crumbs.

Press the crumbs into the bottom of a 9x13 inch baking pan.

Bake in a preheated 350°F oven for 15-20 minutes, or until golden brown. Let cool completely.

In a large bowl, whisk together the eggs, sugar, flour, lemon juice, lemon zest, and salt until smooth.

Pour the lemon filling over the cooled crust.

Bake in a preheated 350°F oven for 25-30 minutes, or until the filling is set.

Let cool completely before cutting into squares.

Enjoy!