Lemon Butter Bars
["2 c. unsifted flour", "1 c. (2 sticks) unsalted butter, softened", "1/2 c. plus 1 Tbsp. confectioners sugar", "4 eggs", "2 c. sugar", "1 tsp. baking powder", "1/2 tsp. salt", "2/3 c. freshly squeezed lemon juice"]
["Preheat oven to 350\u00b0.", "Beat together flour, butter and 1/2 cup confectioners sugar until well blended.", "Press into bottom of 13 x 9-inch baking pan.", "Bake for 25 to 30 minutes or until lightly golden."]
["flour", "unsalted butter", "confectioners sugar", "eggs", "sugar", "baking powder", "salt", "freshly squeezed lemon juice"]