I ALWAYS cook my stuffing with my turkey. If you are cooking your stuffing in the same pan you use to roast your turkey, fill the pan with stuffing, place the rack on top of stuffing, and place turkey on rack. The juices of the turkey should keep the stuffing moist, but you may need to baste with a little broth. You should be able to collect the turkey juices and use them to baste the turkey. However, you can also baste with melted butter.