Step 1

Preheat oven to 350ºF.

Step 2

Line a 9x13 pan with foil or parchment, and lightly spray with non-stick cooking spray.

Step 3

Cream together the butter and sugar. Mix in the flour and salt until dough forms.

Step 4

Press the dough into the pan, building up 1/2 inch crust on all sides.

Step 5

Bake the crust for 15-20 minutes or until lightly golden brown. Chill.

Step 6

Whisk together all of the remaining ingredients (except the powdered sugar), and pour into the cooled crust. Bake for 30-35 minutes until filling is set. Let cool to room temperature or chill overnight.

Step 7

Dust with powdered sugar before cutting and serving.