Lemon Squares
["2 c. sifted all-purpose flour", "1/2 c. sifted powdered sugar", "1 c. (2 sticks) butter, cut into pieces", "1/4 c. all-purpose flour", "1/2 tsp. baking powder", "4 eggs", "2 c. sugar", "1/3 to 1/2 c. fresh lemon juice"]
["Preheat oven to 350\u00b0.", "Resift 2 cups flour with powdered sugar into medium bowl.", "Add butter and mix thoroughly.", "Pat dough evenly into bottom of 9 x 13-inch baking dish.", "Bake until golden, about 25 minutes."]
["flour", "powdered sugar", "butter", "all-purpose", "baking powder", "eggs", "sugar", "lemon juice"]