Lemon Squares
["1 c. butter", "2 c. sifted flour", "1/2 c. confectioners sugar", "2 c. sugar", "4 Tbsp. flour", "1 tsp. baking powder", "4 eggs", "6 Tbsp. lemon juice", "pinch of salt"]
["Preheat oven to 350\u00b0.", "Melt butter; add sifted flour and confectioners sugar.", "Mix well and pack into ungreased 9 x 13-inch pan.", "Bake for 15 minutes."]
["butter", "flour", "confectioners sugar", "sugar", "flour", "baking powder", "eggs", "lemon juice", "salt"]