The Perfect February Dessert – Lemon Bars! For the crust: 1/2 pound unsalted butter, at room temperature 1/2 cup granulated sugar 2 cups flour 1/8 teaspoon salt For the filling: 6 extra-large eggs at room temperature 3 cups granulated sugar 2 tablespoons grated lemon zest (4 to 6 lemons) 1 cup freshly squeezed lemon juice 1 cup flour Icing sugar, ...