Preheat oven to 350°F (175°C). Make the crust by combining flour, powdered sugar, and salt. Cut in cold butter until mixture resembles coarse crumbs. Press into an ungreased 9x13 inch baking pan.
Bake for 15-20 minutes, or until lightly golden. In a separate bowl, whisk together powdered sugar, lemon juice, eggs, and lemon zest until smooth.
Pour lemon mixture over the baked crust. Bake for another 20-25 minutes, or until the filling is set. Let cool completely before cutting into bars.
Notes
Store leftover lemon bars in an airtight container in the refrigerator for up to 3 days.