Make shortbread crust by combining the 2 cups flour, powdered sugar, and soft butter until it comes together in a dough.
Press the shortbread mixture into a 9 x 13 well-greased pan.
Bake at 350 degree for 12 minutes.
While the shortbread crust is baking combine lemon juice, sugar, eggs, egg yolks, zest, and 1/2 cup flour until well-mixed.
Pull the shortbread crust out of the over and pour filling over hot crust.
Put back in the oven for 30 minutes or until set in middle.
Remove from oven and loosen from edges with a knife and let it cool.
Cut into bars and sprinkle with powdered sugar.
Enjoy!
Side note: Lemon bars can be stored in freezer for later if needed.