1 1/2 cups flour
1/2 cup powdered sugar
6 oz. cold unsalted butter, cut in 1/2-inch pieces
6 large eggs
3 cups sugar
1 cup plus 2 tbsp. fresh lemon juice
1/2 cup flour
Crust: Preheat oven to 325. Mix flour and powdered sugar. Cut in butter until pea-sized. Mixture will be very dry. Gently press in bottom of 13-by-9 inch pan. Bake until golden brown, 20 to 25 minutes. Let cool to room temperature and reduce oven to 300.
Filling: Whisk together eggs and sugar until smooth. Stir in lemon juice and then flour. Pour filling on crust and bake until set, about 40 minutes. Cool completely. Cut into 21/4 inch squares. Dust with powdered sugar. Makes 24.