Preheat oven to 350 degrees
Line bottom of baking dish with parchment paper - spray with cooking spray and set aside
In a bowl, blend the flour, sugar salt and butter. Press into the baking dish and bake until golden.
Remove from oven and set crust aside.
Reduce oven to 300 degrees.
Stir together sugar and flour until no lumps of flour remain then add the lemon juice and zest and stir until smooth.
Add the beaten eggs and whisk until completely combined then pour filling onto the crust.
Bake at 300 degrees for 25-30 minutes until filling is set in centre. Place on wire rack then cover and refrigerate until chilled.
Cut into squares then dust with powdered sugar.
1.5 cups of all purpose flour
1/3 of a cup of granulated sugar
1/4 teaspoon of salt
1 cup of unsalted butter
2 cups granulated sugar
1/3 cup of all purpose flour
3/4 cup lemon juice
Zest of 1 lemon
4 large eggs
Powdered sugar for sprinkling