1 22 oz. package Giovanni Rana Cheese ‘Delicato’ Tortellini ½ cup Giovanni Rana Marinara Sauce ½ cup grated parmigiano reggiano, divided ¼ cup butter, plus extra for pan ¼ cup flour 3 cups whole milk 1½ cups (packed) grated fontina cheese, divided 1 egg 1 cup fresh flat-leaf parsley, roughly chopped ½ cup ricotta