Filling:
2 extra-large eggs
1 cup granulated sugar
2 tablespoons flour
½ teaspoon baking powder
Grated rind of 1 lemon
2 ½ tablespoons freshly squeezed lemon juice
1 teaspoon sifted powdered sugar for dusting
Crust:
½ cup butter, more for pan
1 cup flour
¼ cup powdered sugar