Lemon Squares
["2 1/2 c. all-purpose flour, divided", "1/2 c. sifted powdered sugar", "1 c. butter or margarine, melted", "4 eggs, beaten", "2 c. sugar", "1/3 c. lemon juice", "1/2 tsp. baking powder", "additional sifted powdered sugar"]
["Combine 2 cups flour and 1/2 cup powdered sugar.", "Add butter; mix well.", "Press mixture evenly into a 9 x 13 x 2-inch baking dish.", "Bake at 350\u00b0 for 20 minutes.", "Combine eggs, sugar and lemon juice in medium bowl; stir in egg mixture.", "Pour over baked crust. Bake at 350\u00b0 for 25 minutes or until lightly browned and set. Sprinkle lightly with additional powdered sugar.", "Cool and cut into 1-inch squares."]
["flour", "powdered sugar", "butter", "eggs", "sugar", "lemon juice", "baking powder", "powdered sugar"]