Bennett MarloweBy Bennett Marlowe

A 15 pound turkey typically takes about 3 hours and 15 minutes to 4 hours to roast unstuffed at 325°F, though the true answer depends on whether the bird is thawed, stuffed and what your oven actually does. This guide gives you the time range, a working timeline for a holiday meal, the temperatures that confirm doneness, and the mistakes that push dinner off schedule. Use it to plan backward from the moment you want to carve.

How Long to Cook a 15 Pound Turkey: The Short Answer

For a fully thawed, unstuffed 15 pound turkey roasted at 325°F, plan on roughly 3 hours 15 minutes to 3 hours 45 minutes. Stuffed birds need longer, usually 3 hours 45 minutes to 4 hours 15 minutes. These are estimates. The only reliable finish line is an internal temperature of 165°F in the thickest part of the thigh and the center of the breast stuffing, if you stuffed the bird.

Most cooks use a rule of about 13 to 15 minutes per pound at 325°F for an unstuffed bird in this weight range. Multiplying 15 pounds by that range gives you 195 to 225 minutes, which is the same window as above. Treat that number as the starting point for your schedule, not a guarantee. If you want more background, see How to Cook Flank Steak Perfectly on the Stovetop.

Roasting Times for a 15 Pound Turkey at Different Oven Temperatures

Oven temperature changes the timing considerably. Higher heat shortens the roast but raises the risk of dry breast meat and scorched skin, so most home cooks settle on a moderate setting. The table below uses common ranges for an unstuffed, thawed bird. Confirm with a thermometer every time.

Oven Temperature Unstuffed Estimated Time Stuffed Estimated Time Notes
325°F 3 hr 15 min to 3 hr 45 min 3 hr 45 min to 4 hr 15 min Most common recommendation; even browning
350°F 2 hr 45 min to 3 hr 15 min 3 hr 15 min to 3 hr 45 min Faster; watch the skin and breast closely
425°F (first 30 min), then 325°F 3 hr 15 min to 3 hr 30 min Not usually recommended for stuffed birds Starts with high heat for color, then moderates

Whatever temperature you choose, the time table is only meaningful if the turkey is fully thawed. A frozen or partly frozen bird can need an hour or more extra, and it cooks unevenly. If you still need to defrost, see How to Thaw a Turkey Safely: Refrigerator, Cold Water and Microwave before you start the clock.

Factors That Change the Cooking Time

Recipes list a time range because real turkeys vary. Several factors can move your finish time by 30 minutes or more.

  • Thawing status. A fully thawed bird is the baseline. Partly frozen birds need substantially longer and may cook unevenly.
  • Stuffing. Stuffing inside the cavity adds time and must reach 165°F itself. Many cooks skip stuffing the bird and bake it separately for this reason.
  • Starting temperature. A bird that sat out for a long time will heat faster, but that is not a safe way to shorten the schedule. Keep the bird refrigerated until roasting.
  • Pan and rack. A heavy roasting pan with a proper rack promotes airflow. For guidance, see How to Choose a Roasting Pan for Turkey: Size, Material and Rack.
  • Oven accuracy. Many home ovens run 15 to 25°F off the dial. An inexpensive oven thermometer helps you read the real temperature.
  • Brining or seasoning. Brining adds water to the meat but does not meaningfully change roasting time. Confirm doneness with a thermometer regardless. For brining steps, see How to Brine a Turkey Safely.

Step-by-Step: Roasting a 15 Pound Turkey

Before the oven

  1. Confirm the bird is fully thawed. Allow about one day of refrigerator thawing for every 4 to 5 pounds, so a 15 pound bird needs roughly three to four days.
  2. Remove the giblet packet and neck from the cavity. Rinse only if you prefer, then pat the bird dry with paper towels. Dry skin browns better.
  3. Let the bird sit at room temperature for no more than 30 to 60 minutes before roasting, so it does not sit out longer than necessary.
  4. Preheat the oven to your chosen temperature, usually 325°F, and set a rack in the lower third.
  5. Tuck the wing tips under the body, tie the legs loosely if you like, and rub the skin with softened butter, oil or herb seasoning.

During roasting

  1. Place the turkey breast side up on a rack in a roasting pan. Add about 1 cup of water or stock to the pan to prevent drippings from scorching.
  2. Cover the breast loosely with foil for the first half of cooking to slow browning, then remove it to finish the skin.
  3. Baste every 45 minutes if you want, but opening the oven drops the temperature. Basting is optional.
  4. Start checking temperatures about 2 hours and 30 minutes into roasting for an unstuffed bird at 325°F.
  5. Rotate the pan once if your oven browns unevenly.

Checking doneness

  1. Insert an instant-read or probe thermometer into the thickest part of the thigh without touching bone. Look for 165°F. For proper placement details, see How to Use a Meat Thermometer for Turkey (and Where to Insert It).
  2. Check the breast too. It may read higher than the thigh, and it can dry out if you wait for the thigh to hit 165°F while the breast overshoots.
  3. If stuffed, check the center of the stuffing. It must also reach 165°F.
  4. Let the bird rest, uncovered or loosely tented, for 20 to 30 minutes before carving. Carryover heat will raise the temperature slightly during rest.

Sample Holiday Timeline for a 15 Pound Turkey

Working backward from a 5:00 p.m. dinner makes the day manageable. This example assumes a 325°F unstuffed roast of about 3 hours 30 minutes.

  1. Two to four days before: move the turkey to the refrigerator to thaw.
  2. Day before: make stock from giblets if you want gravy, prep side dishes and store leftovers safely. See How to Make Turkey Stock From the Carcass.
  3. Morning of: remove the turkey from the refrigerator, pat dry and season. Preheat the oven.
  4. 11:30 a.m.: place turkey in the oven.
  5. 2:45 p.m.: begin checking temperature.
  6. 3:00 to 3:15 p.m.: remove turkey once thigh reads 165°F and breast is near 165°F, then rest.
  7. 3:30 p.m.: make gravy, raise oven temperature for side dishes.
  8. 4:30 p.m.: carve. See How to Carve a Turkey: Knives, Boards and Step-by-Step.

Common Mistakes

  • Roasting from frozen or partly frozen. The outside overcooks while the center stays unsafe.
  • Relying on time alone. Thermometers are the only dependable test.
  • Stuffing a bird and underestimating time. Stuffed birds can take an extra hour, so start earlier.
  • Pulling the turkey at 165°F from the breast alone. The thigh is the slowest part to reach temperature and is the correct check point.
  • Skipping the rest. Carving straight from the oven releases juices and dries the meat.
  • Leaving the turkey out too long. Keep prep time short and the bird cold until it goes in the oven.

Tips for a Smoother Roast

  • Use a probe thermometer with an alarm so you can leave the kitchen without watching the clock.
  • Start with a well-calibrated thermometer. See How to Calibrate a Kitchen Thermometer.
  • Keep a foil tent ready for the breast if the skin darkens early.
  • If your oven is crowded with side dishes, the turkey can rest while you finish them, which buys flexibility.
  • Instant-read thermometer. A quick, accurate reading in the thigh and breast is the fastest way to confirm 165°F. View on Amazon
  • Probe thermometer with alarm. It stays in the turkey during roasting and alerts you when the target is reached, which makes the timeline easier to manage. View on Amazon
  • Heavy roasting pan with rack. Elevating the bird improves airflow and browning on all sides. View on Amazon
  • Oven thermometer. It shows whether your oven is actually near the set temperature, which directly affects your roasting time. View on Amazon

FAQ

How long does a 15 pound turkey take to cook unstuffed at 325°F?

Plan on about 3 hours 15 minutes to 3 hours 45 minutes for a fully thawed bird. Always confirm with a thermometer.

How long to cook a 15 pound turkey stuffed?

A stuffed 15 pound turkey typically takes 3 hours 45 minutes to 4 hours 15 minutes at 325°F. The stuffing must also reach 165°F.

What internal temperature should a turkey reach?

The USDA recommends 165°F in the thickest part of the thigh, wing and breast, and in any stuffing. Check several spots to be sure.

Can I cook a 15 pound turkey at 350°F?

Yes. At 350°F an unstuffed bird usually finishes in about 2 hours 45 minutes to 3 hours 15 minutes. Watch the skin and breast so they do not overbrown.

Should I cover the turkey while it roasts?

A loose foil tent on the breast for the first half of roasting helps prevent overbrowning. Remove it later to crisp the skin.

How long should the turkey rest before carving?

Rest it for 20 to 30 minutes. Resting lets juices redistribute and allows carryover heat to finish cooking.

Is it safe to thaw a turkey on the counter?

No. Thaw in the refrigerator, in cold water changed every 30 minutes, or in the microwave if the bird will be cooked immediately. Consult your local food safety guidance for specifics.

Conclusion

A 15 pound turkey roasted unstuffed at 325°F usually needs about 3 hours 15 minutes to 3 hours 45 minutes, while a stuffed bird needs closer to 4 hours. Use these numbers to build a timeline, but let a thermometer make the final call at 165°F. Starting with a fully thawed bird and resting it before carving will do more for your results than any single timing rule.

Bennett Marlowe

About Bennett Marlowe

Bennett focuses on practical advice for holiday cooking & baking: what matters before you buy, what to skip, and how to get more out of what you already own.