1 c. butter, softened
2 c. flour plus 4 tbsp. flour
1/2 c. powdered sugar
4 eggs
2 c. sugar
4 tbsp. lemon juice
1/2 tsp. salt (scant)

Mix butter, 2 cups flour and powdered sugar. Pat into greased 9 x 13 pan.

Bake in 350°F oven for 20 minutes. Beat eggs, sugar, 4 tablespoons flour, lemon juice and salt together; pour over hot crust.

Bake 25 minutes (do not overbake; it should just be firm). When cool, sprinkle with powdered sugar.