Crust: ½ c. softened butter 2 c. flour 1 ½ c. sugar Dash of salt Combine soft butter, margarine, flour, sugar, and salt. Mix well. Pat into a 9x13 pan, extending crust up edges. Bake at 350 degrees for 15 min.
Filling: 2 c. sugar ¼ c. flour 4 eggs, well beaten ½ c. lemon juice Combine sugar, flour, eggs, and lemon juice. Mix well. Pour over crust. Return to oven and bake 25 more min. Sprinkle with powder sugar.