01 -
Set the oven to 350°F. Prep a 9x13-inch pan by covering it with parchment paper.
02 -
Stir together melted butter, sugar, vanilla, and salt. Add the flour and mix until smooth. Push the dough into your prepped pan.
03 -
Bake the base for about 20 minutes. It should just barely start to turn golden.
04 -
Mix together the sugar, flour, eggs, lemon peel, and lemon juice in a big bowl. Pour this mixture over the piping-hot crust.
05 -
Pop it back in the oven for 25 minutes. Rotate it halfway through baking. Cool it down, then stick it in the fridge for at least two hours or overnight. Sprinkle on a bit of powdered sugar before you cut and serve.