How Long Do I Cook 15 Pound Turkey? | Roast Time That Works

A 15-pound turkey usually roasts for 3¾ to 4¼ hours at 325°F unstuffed, or about 4 to 4¼ hours stuffed.

A 15-pound turkey sits in the sweet spot for a family meal: big enough to feed a crowd, small enough to roast in one afternoon. Pull it too soon and the center lags behind. Leave it in too long and the breast can turn dry before the dark meat is ready.

The safest way to plan dinner is to treat roast time as a range, not a single magic number. For a fully thawed 15-pound bird in a 325°F oven, start with 3 hours 45 minutes to 4 hours 15 minutes if it’s unstuffed. If it’s stuffed, plan on about 4 to 4 hours 15 minutes. Then let the thermometer make the final call.

Cooking a 15-pound turkey at 325°F

A 15-pound turkey falls into the 14-to-18-pound band on the standard roasting chart. That’s why the usual window lands at 3¾ to 4¼ hours for an unstuffed bird. The same size turkey with stuffing inside needs a little longer, since heat has to work through the center before the stuffing reaches a safe temperature too.

Time gets you close, but temperature tells you when the bird is done. Roast until the thickest part of the breast, the innermost thigh, and the wing area all reach 165°F. If the bird is stuffed, the center of the stuffing needs to hit 165°F too. That single habit saves more turkey dinners than any trick with butter, foil, or basting.

What changes the clock

Two 15-pound turkeys can finish at different times. That’s normal. A bird that went into the oven still chilly from the fridge may need a bit more time than one that sat out while you prepped the pan. Opening the door every 15 minutes can slow it too.

• Stuffing inside the bird: adds time because the center heats slowly.
• Partly frozen meat: stretches the roast and can brown the skin before the middle catches up.
• Oven accuracy: a cool oven can tack on 20 minutes or more.
• Deep roasting pans: trap steam and can soften the skin.
• Frequent door opening: dumps heat and drags out the cook.

If you want a simple plan, preheat well, roast on a rack if you have one, and start checking early instead of late. For a 15-pound turkey, the first temperature check usually makes sense around the 3 hour 30 minute mark if unstuffed, or 3 hours 45 minutes if stuffed.

Turkey size	Unstuffed at 325°F	Stuffed at 325°F
8 to 12 pounds	2¾ to 3 hours	3 to 3½ hours
12 to 14 pounds	3 to 3¾ hours	3½ to 4 hours
14 to 18 pounds	3¾ to 4¼ hours	4 to 4¼ hours
18 to 20 pounds	4¼ to 4½ hours	4¼ to 4¾ hours
20 to 24 pounds	4½ to 5 hours	4¾ to 5¼ hours
Bone-in turkey breast, 4 to 6 pounds	1½ to 2¼ hours	Not usually stuffed
Bone-in turkey breast, 6 to 8 pounds	2¼ to 3¼ hours	3 to 3½ hours

Roasting steps that keep the meat juicy

Good turkey doesn’t come from a stopwatch alone. A few steady steps help you hit the timing range without drying out the bird. A roasting pan, a thermometer, and a little patience do most of the work.

Set up the bird the right way

Pat the skin dry, tuck the wing tips behind the shoulders, and put the turkey breast-side up on a rack or bed of sturdy vegetables. Dry skin browns better. Tucked wings are less likely to scorch. Rub a little oil or melted butter on the outside and season the cavity plus the skin.

Then place the bird in a fully heated 325°F oven. The FoodSafety.gov roasting time chart is a handy way to sanity-check the range for your turkey size before you start.

Roast, then check in the thick spots

Let the bird roast undisturbed for most of the cook. If the skin is getting too dark before the center is ready, lay foil loosely over the breast. Don’t seal it tight. You want the top protected, not steamed.

Where to place the probe

When you start checking, test the breast, the innermost thigh, and the wing area. The FSIS roasting guide says a whole turkey is safe once those spots reach 165°F. Push the probe into the deepest part without touching bone. Bone can throw the reading off and make a bird seem done before it is.

How Long Do I Cook 15 Pound Turkey? If It’s Stuffed

A stuffed 15-pound turkey usually needs about 15 to 30 minutes more than an unstuffed one. The stuffing is dense, moist, and tucked inside the coolest part of the bird, so it warms slowly.

If you want the easiest path to an even roast, cook the stuffing in a separate dish. You’ll still get crisp edges and a soft center, and the turkey will roast more predictably. If you do stuff the bird, spoon the mixture in loosely. Packed stuffing slows heat even more.

Checkpoint	What you want to see	What to do next
About 3½ hours, unstuffed	Breast heading toward 150°F+	Start checking every 15 to 20 minutes
About 3¾ hours, stuffed	Outer meat close, stuffing still lagging	Test the center of the stuffing too
Skin browning early	Top getting dark before breast is ready	Tent the breast loosely with foil
Breast at 165°F, thigh lower	White meat done first	Keep roasting until thigh catches up
All target spots at 165°F	Bird is safe to pull	Rest 15 to 20 minutes before carving

Signs the turkey is close

A bird near the finish starts to feel different. The legs loosen up. The skin turns a deeper golden brown. Juices may run clearer near the thigh. Those clues can help you spot the last stretch, but they still come second to the thermometer.

• The breast can finish before the thigh. That’s common on large birds.
• Stuffing can lag behind the meat by several degrees.
• Carryover heat keeps working during the rest, so don’t carve the second it leaves the oven.

Timing the meal without a last-minute scramble

Roast time starts long before the pan hits the oven. A frozen 15-pound turkey needs thawing time too. In the fridge, plan on about 3 to 4 days. In cold water, figure about 30 minutes per pound, which works out to 7½ hours, with fresh cold water changes every 30 minutes. The FSIS thawing chart lays out both methods clearly.

Resting matters just as much as roasting. Give the turkey 15 to 20 minutes before carving. That pause lets the juices settle back into the meat, which makes each slice cleaner and less dry. That window is perfect for gravy and carving setup.

Common mistakes that throw off turkey timing

Turkey can be forgiving, but a few habits make the timing messier than it needs to be. Most are easy to fix once you know where the delay comes from.

• Starting with a partly frozen bird: the outside cooks while the center stays behind.
• Trusting the pop-up timer alone: use a thermometer in the meat and, if stuffed, the center of the stuffing.
• Roasting at a different oven temperature: the chart above is built for 325°F.
• Skipping the rest: carved too early, the juices spill out onto the board instead of staying in the slices.
• Basing doneness on color: browned skin looks nice, but it can show up well before the bird is ready.

If you’re planning dinner, a smart rule is to finish early rather than flirt with a late bird. A rested turkey holds well for a short stretch, especially if it’s tented loosely.

So, if your turkey weighs 15 pounds, set the oven to 325°F and plan on 3¾ to 4¼ hours unstuffed, or about 4 to 4¼ hours stuffed. Start checking before the end of the range, pull it only when every target spot hits 165°F, and give it a short rest before carving. That rhythm keeps the timing sane and the meat in good shape.