Preheat oven to 350 degrees Fahrenheit.
Line a 9x13 pan with parchment paper.
In a food processor, add your flour...
confectioners' and granulated sugar...
Grab a lemon.
Now grab some rosemary.
Finely mince it, add a tablespoon to the food processor.
Mix until combined.
Dice it up.
Throw it in.
Mix until it comes together.
Press the dough evenly into the pan, and prick all over with a fork. Bake for about 15 minutes, until golden.
Eggs in a large bowl.
freshly squeezed lemon juice...
and granulated sugar.
Whisk it all together.
Your crust should be done.
Pour the lemon mix right on top.
Bake for 25-30 minutes, until center is set.
Once completely cool, dust with confectioners' sugar if desired.
Slice into squares and serve.