How long to cook a 15 pound turkey at 350 degrees?

Roasting times for whole turkeys

Preheat your oven to 160°C (325°F) and use these cooking times to prepare roast turkey that's moist, tender and delicious. * 23 to 26 lb Un Stuffed Turkey 4 - 4 ½ hrs * 23 to 26 lb Stuffed Turkey 4 ½ - 5 hrs Turkey is fully cooked and safe to eat when the meat thermometer reads 77°C or 170°F for an un-stuffed turkey and 82°C or 180°F for a stuffed turkey.