Rub down with butter or extra virgin olive oil - inside & out
Sprinkle with kosher salt and fresh cracked pepper - inside & out
Roast turkey on a rack in a roasting pan until juices run clean - meaning after the prescribed cooking time, you may pull legs from the bird and test by stabbing with a knife and watch the juices escape.
You can add aromatics to the pan during cooking to help flavor the bird: onions, celery, bay leaves & carrot (surround bird while cooking)
Notes
Cooking time: 20 minutes/lb. 12 lb. turkey = 4 hours 20 lb. turkey = 6+ hours Gravy make from left over turkey stock/pan drippings: Mix roux (50% flour + 50% butter, melt butter & mix in flour) with turkey stock/drippings (1C drippings + 1 tbsp. roux = gravy)
Recipe by sloCooking at http://slocooking.net/2019/10/12/how-to-cook-a-turkey/