How Long To Slow Roast A Turkey At 250 Degrees. Preheat the oven to 450 f 232 c and put the turkey in the oven in its roasting pan. You of course do not have to.
And this long slow process results in impossibly tender meat that literally falls off the bone and a golden deep flavor and crisp brown skin. To cook turkey overnight at 225 degrees you need to first cook it at 450 degrees for 45 minutes and then reduce the oven temperature and set your alarm. Tie the legs tightly together.
Cooking the turkey on high heat for 45 minutes or up to an hour will help kill any bacteria and make the slow roasting process safer.
Then lower oven heat to 180 degrees desired internal temperature. Rub oil over all sides of turkey and place turkey in uncovered roasting pan in oven. Bake for 1 hours at 300 degrees to kill bacteria. Then place the turkey onto a tray or into a roasting pan and refrigerate uncovered for 24 to 48 hours.
