Preheat the oven to 350 degrees. Grease a 9x13 pan.
For the Crust
For the crust, cream the butter and sugar until light and fluffy in the bowl of an electric mixer. Combine the flour and salt and with the mixer on low, add to the butter until just mixed. Add vanilla. Gather the dough into a ball and press gently and evenly into the 9x13 pan. Chill in the refrigerator for 15 minutes.
Bake the crust for 18 minutes, until very lightly browned. Let cool on a wire rack. Leave the oven on, set to 350 degrees.
For the Filling
For the filling, whisk together the eggs, sugar, lemon zest, lemon juice and flour. Pour over the crust and bake for 30 minutes, until the filling is set. Let cool to room temperature.
Cut into triangles or squares and dust with powdered sugar.
Notes
Makes about 20 servings.
Recipe by DessertedPlanet.com at https://dessertedplanet.com/lemon-bars/