How Long Does It Take to Cook a 20lb Turkey at 350 Degrees?

Several factors contribute to a perfect Thanksgiving, but the holiday hinges on one question in particular: How long will it take to cook that turkey? Notoriously prone to overcooking, turkey meat has been ridiculed for its perceived dryness time and again. On top of the meat’s naturally lean characteristics, these very large birds have sections that vary widely in shape, thickness, and density. These factors can make it tough (pun intended) to achieve a juicy interior and crispy, golden-brown skin. Sadly, not even the richest turkey gravy can save a bird that isn’t cooked properly.

But making a beautiful, delicious turkey is far from impossible. Armed with this step-by-step guide, you’ll have ample time to focus on arguably everyone’s favorite part of the Thanksgiving dinner spread (the side dishes) without stressing too much about the main event.

Cooking a big 20lb turkey can seem like an intimidating task, especially if you’ve never cooked one that large before. Many people wonder, how long does it take to fully cook a 20lb turkey at 350 degrees Fahrenheit? The answer depends on a few factors.

In general, cooking times for turkeys range from about 13-15 minutes per pound So for a 20lb turkey, you’ll need about 4-5 hours total cooking time at 350°F to ensure it reaches the safe internal temperature of 165°F in the thickest part of the breast and thigh Here’s a more detailed look at approximate cooking times

Cooking Times for a 20lb Turkey

  • At 425°F: 3.5 – 3.75 hours
  • At 400°F: 3.75 – 4 hours
  • At 350°F: 4 – 4.25 hours

As you can see, cooking at a lower temperature like 350°F takes longer than cooking at higher temperatures like 425°F. The advantage of using a lower temperature is that it allows the turkey to cook more gently and evenly throughout This helps keep the meat moist and tender

Higher temperatures will speed up the cooking time but may cause the outer portions of the turkey to overcook and dry out before the inside is finished. That’s why most experts recommend roasting turkeys at 325-375°F.

Key Tips for Cooking a 20lb Turkey

Here are some key tips to ensure perfect turkey results:

  • Use a thermometer. Investing in a good digital meat thermometer is crucial. Test the internal temperature in the thickest part of the thigh and breast to determine doneness.

  • Calculate total cooking time. Plan for about 13-15 minutes per pound at 325-375°F. For a 20lb turkey, estimate 4-5 hours total time.

  • Factor in carryover cooking. The turkey’s temperature will continue rising 5-10°F after removing it from the oven as the heat evenly distributes. So take it out before it hits 165°F.

  • Let it rest. Letting the turkey rest for 30-60 minutes after roasting allows the juices to absorb back into the meat. Tent it with foil to keep warm.

  • Maintain oven temperature. Use an oven thermometer to confirm your oven runs at the set temperature. Opening the door frequently causes drops in temp.

  • Cook breast side up. Placing the turkey with the breast side up promotes even cooking between dark and white meat.

  • Use a roasting pan. Choose a heavy roasting pan to allow for good heat circulation around the turkey.

  • Baste occasionally. Basting the turkey with the pan juices helps keep the skin from drying out. Baste every 30-60 minutes.

  • Make sure it’s fully thawed. Only cook fully thawed turkeys to ensure even cooking. Thaw frozen turkeys 1-2 days per 4-5 pounds in the fridge.

Is a 20lb Turkey Too Big?

While large 20lb turkeys are popular for feeding a crowd, some people find them to be excessive. The trouble with oversized turkeys is that the breast meat often ends up drying out from prolonged cooking before the dark meat is finished.

Foroptimal moisture and flavor, many experts recommend purchasing turkeys in the 12-15lb range instead. Smaller turkeys are easier tomanage and you can cook two if needed to feed a large party.

If cooking a 20lb turkey, beextra diligent aboutbasting, monitoring temperature, and letting it rest before carvingfor best results.And as always, have a meat thermometer handy to confirm doneness!

Signs Your Turkey is Fully Cooked

Here are signs to check for when determining if your 20lb turkey is cooked through at 350°F:

  • Internal temperature of 165°F in the thickest portions of breast and thigh, checked with a food thermometer

  • Clear juices run from the thickest part of the thigh when pierced with a knife or fork

  • Thigh and wing joints move easily when manipulated

  • Meat near thigh bone looks opaque with no traces of pink when pierced

  • Stuffing temperature reaches 165°F (if cooked inside turkey)

  • Aroma of cooked turkey emanates from oven vents or when cavity is opened

  • Drumsticks twist loosely in their sockets

  • Skin is lightly browned and crispy

If in doubt, keep roasting until the thermometer confirms a safe internal temp. The extra time is worthwhile to ensure tasty, fully cooked turkey meat.

What if It’s Undercooked?

If you cut into your turkey and find the meat is still pink or not quite cooked through, don’t panic. Simply pop it back into a 350°F oven until the thermometer registers 165°F in multiple spots. Monitor it closely and test the temperature every 5-10 minutes to avoid overcooking.

Lightly tenting foil over breast and extremities can help slow further browning. Just remember to remove foil and allow skin to crisp at end once fully cooked.

If caught early, finishing off an undercooked turkey by returning it to the oven usually provides good results. The meat will continue gently cooking to perfection with little evidence of the mishap once you carve and serve it.

Mastering the 20lb Turkey

Cooking turkey can provoke anxiety, especially when dealing with a large 20lb bird. To master the process, arm yourself with the right tools – a good thermometer, heavy roasting pan, and basting brush.

Calculate the complete cooking time needed at 350°F – for a 20lb turkey expect around 4-4.25 hours. Monitor its progress carefully and rely on both temperature and visual signs of doneness. Resting it properly afterwards also ensures a juicy, flavorful feast.

With the right techniques, even novice cooks can successfully roast a mouthwatering 20lb turkey. A perfectly cooked, golden brown turkey makes a stunning centerpiece to your holiday table.

how long does it take to cook a 20lb turkey at 350 degrees

Before you preheat the oven…

Whether you opt to roast your bird whole, spatchcocked, or cut into parts, there are a few preliminary steps you should always take. Though not directly tied to the turkey cooking time, these steps will help lead to a succulent-on-the-inside, crackly-on-the-outside result.Buy the right size bird.

Unless you want to be eating leftover turkey for days, shop for a turkey that’s just big enough to feed your Thanksgiving crew. Opting for a smaller bird will reduce the turkey’s roasting time, leaving the oven free for sides and pies. (Read more: How Much Turkey Do You Need Per Person?)Don’t forget to defrost.

Always ensure a frozen turkey is fully thawed (in the refrigerator, please; about 24 hours per every 5 pounds) before attempting to cook it. A partially thawed turkey can seriously throw off roasting times—and without thawing, you won’t be able to remove the giblets. (Read more: How to Thaw a Turkey, Depending on How Much Time You Have via Epicurious.)Brine your bird.

Dry brining is key to moist, succulent meat. Whether you choose a simple brine of plain kosher salt, a blend of kosher salt and black pepper, or a custom spice mix, the salt in the mixture will draw water out of the turkey. The salty juices will then be absorbed into the meat, carrying all that flavor with it. This step maximizes moisture content and ensures well-seasoned turkey. A dry brine also tenderizes the meat, prevents a stringy texture, and encourages skin-browning—all hallmarks of a properly cooked turkey.

What about a wet brine, you ask? Dry brines are quicker, easier, and more effective than their liquid counterparts. Not to mention, wet brines can cause a major mess if the liquid spills out—and, frankly, they take up way too much fridge space (at a premium in the lead-up to Thanksgiving).

It’s essential to allow your dry-brined turkey time in the refrigerator (at least 12 hours and up to 3 days), uncovered, before roasting it. That might sound lengthy, but the brine needs time to work its way through the turkey’s big muscles. If you’re short on time, you can dry brine the turkey before it’s fully thawed. Give it at least 24 hours for the exterior to become pliable, then season away and return the bird to the fridge.Use your oven wisely.

Invest in an oven thermometer before the big day arrives to ensure your oven is calibrated. Then, while the bird is cooking, open the oven door only when necessary—minimize peeking, or you’ll bring down the temperature and lengthen the amount of time the turkey needs in the oven. These tips are important any time you use your oven, but especially when roasting a whole bird.

The final, vital step towards a well-cooked turkey—specifically a whole one—is pulling it from the oven before it’s actually ready. You probably already know that 165° is the sweet spot for fully cooked poultry, as mandated by the USDA—though dark meat really is better around 175°–190°. Use an instant-read thermometer to take the temperature of the turkey: It’s a good idea to remove your turkey from the oven when a probe inserted into the thickest part of the breast reads about 150°. As the roast turkey rests (30–60 minutes is ideal), the residual heat will continue to push the internal temperature up to the goal temperature, without going over.

Rest your bird on a cutting board with a trough, or on a platter, to collect any runoff juices (save them for gravy). There’s no need to tent the turkey with aluminum foil: The insulated heat of the bird will last surprisingly long. Plus, tenting can cause crispy skin to go limp.

Exactly How Long to Cook a 20-Pound Turkey at 350 Degrees Fahrenheit

FAQ

Is it better to cook turkey at 325 or 350?

We recommend roasting turkey at 350 degrees F (175 degrees C) for 13 minutes per pound for an unstuffed turkey. We’ve done the math for you — check out the chart below to determine both turkey cook times and estimated servings (with leftovers!).

What temperature should a 20 lb turkey be when done?

Regardless of the size of your turkey, it’s safe to eat once its internal temperature reaches 165°F, which you can gauge using a meat thermometer.

How long to roast a 20 lb turkey unstuffed?

How Long to Cook an Unstuffed Turkey
Weight
Cook Time
Servings
12 to 14 pounds
3 to 3¾ hours
8 to 9
14 to 18 pounds
3¾ to 4¼ hours
9 to 12
18 to 20 pounds
4¼ to 4½ hours
12 to 13
20 to 24 pounds
4½ to 5 hours
13 to 16

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