Classic Lemon Bars

Directions

1. 1
   Make the crust: Position a rack in the middle of the oven and preheat to 350 degrees F. Grease a 9-by-13-inch pan with vegetable oil and line with foil, leaving a 2-inch overhang on all sides; grease the foil with oil.
2. 2
   Pulse the butter, flour, both sugars and the salt in a food processor until the dough comes together, about 1 minute.
3. 3
   Press evenly into the bottom and about 1/2 inch up the sides of the prepared pan, making sure there are no cracks.
4. 4
   Bake until the crust is golden, about 25 minutes.
5. 5
   Meanwhile, make the filling: Whisk the whole eggs and yolks, sugar and flour in a bowl until smooth.
6. 6
   Whisk in the lemon zest and juice.
7. 7
   Remove the crust from the oven and reduce the temperature to 300 degrees F. Pour the filling over the warm crust and return to the oven.
8. 8
   Bake until the filling is just set, 30 to 35 minutes.
9. 9
   Let the bars cool in the pan on a rack, then refrigerate until firm, at least 2 hours.
10. 10
    Lift out of the pan using the foil and slice.
11. 11
    Dust with confectioners' sugar before serving.
12. 12
    Photograph by Stephanie Foley