Crust

1. 1. 1. Cream

         Cream the butter and sugar until light.
      2. Mix

         Combine the flour and with the mixer on low, add to the butter until just mixed
      3. Shape

         Dump the dough onto a well-floured board and gather into a ball. Flatten the dough with floured hands and press it into a 9 by 13 by 2-inch baking sheet, building up a 1/2-inch edge on all sides. Chill.
      4. Preheat

         Preheat oven to 350F.
      5. Bake

         Bake the crust for 15 to 20 minutes, until very lightly browned. Let cool on a wire rack. Leave the oven on for the next steps.

Filling

1. 1. Whisk

      whisk together the eggs, sugar, lemon zest, lemon juice, and flour.
   2. Pour and bake

      Pour over the crust and bake for 30 to 35 minutes, until the filling is set.
   3. Cool

      Let cool to room temperature.
   4. Cut

      Cut into triangles and dust with powdered sugar.