Unwrap the thawed turkey, remove plastic thermometer and drumstick holders. Rinse under cold water, then trim off the tail. Pat the bird dry with paper towels. Place the turkey on a platter and refrigerate it uncovered for 2-4 hours to help dry out the skin.
Preheat your smoker to 325 degrees Fahrenheit. While it’s heating, blot the turkey again to remove any remaining moisture.
Stuff the turkey cavity with oranges, onions, carrots, celery, rosemary, thyme, and sage. These aromatics will be discarded after cooking, but they add flavor and promote even roasting.
Use butcher’s twine to tie the legs together, helping the turkey keep its shape and sealing the cavity. Tuck the wings under the bird.
In a small bowl, mix all seasoning ingredients. Set aside one-third of the seasoning. Lightly coat the turkey with oil, then season all over with the remaining two-thirds of the seasoning mix.
Place the turkey on the smoker and close the lid. Smoke for 90 minutes.
While the turkey smokes, melt the butter in a small saucepan over medium heat. Whisk in the reserved seasoning.
Open the smoker, baste one side of the turkey with the seasoned butter, rotate the bird 180 degrees, and baste the other side. Close the lid and continue smoking until the internal temperature reaches at least 160 degrees Fahrenheit in the breast.
Once cooked, remove the turkey from the smoker and let it rest for 20–30 minutes before carving - the internal temperature will raise to 165 degrees Fahrenheit. Serve with Omaha Steaks Roasted Garlic Mashed Potatoes, Omaha Steaks Green Bean Casserole, and Family-Size Whipped Sweet Potatoes.