Lemon Bars
["1 c. butter or margarine", "2 c. flour", "1/2 c. powdered sugar", "2 c. sugar", "4 Tbsp. flour", "1 tsp. baking powder", "4 eggs, beaten", "6 Tbsp. lemon juice", "grated lemon rind (optional)"]
["Blend together the butter, flour and powdered sugar.", "Put mixture into a 9 x 13 x 2-inch cake pan.", "Put mixture into bottom only.", "Bake for 15 minutes until lightly browned.", "Meanwhile mix filling."]
["butter", "flour", "powdered sugar", "sugar", "flour", "baking powder", "eggs", "lemon juice", "lemon rind"]