Step 1

Preheat oven to 350 degrees F.  Line a 9x13 inch glass baking dish with parchment paper, set aside.

Step 2

In a medium bowl, blend together softened butter, 2 cups flour and 1/2 cup sugar. Press into the bottom of the prepared 9x13 inch pan.

Step 3

Bake for 20 to 25 minutes, or until firm and golden.

Step 4

In another bowl, whisk together the remaining 1 and 1/2 cups sugar and 1/4 cup flour. Whisk in the eggs, lemon juice and zest. Pour over the baked crust.

Step 5

Bake for an additional 20-25 minutes, until filling is set and not jiggly.  Allow to cool at room temperature, in the pan on a wire rack.  When cooled, transfer pan to the fridge and chill for at least 4 hours before cutting. Dust with confectioners sugar before cutting if desired.  Store leftovers in the fridge for up to three days.