Cream flour, butter and confectioner's sugar and pat into 8×8″ baking pan. Press firmly. Bake for 15-20 minutes, until top of crust is slightly golden.
For the lemon filling:
Beat eggs, add sugar, lemon juice, 2 tbs. flour and lemon zest, if desired. Pour over crust (when finished baking) and bake for another 15-20 minutes.
Dust lemon bars with confectioner's sugar after baking. Once cool, cut into bars and serve.
Recipe by sweet caroline's cooking at https://sweetcarolinescooking.com/2012/03/09/keep-coming-back-lemon-bars/