An 8 lb (3.6 kg) bone-in turkey breast usually takes about 2½ to 3 hours to roast at 325°F (163°C), but a thermometer—not the clock—determines when it is done. This simple roast is seasoned with butter, lemon, garlic, and herbs, then rested before carving for tender slices and an easy centerpiece.
Ingredients
- 1 whole bone-in turkey breast, about 8 lb (3.6 kg), fully thawed
- 4 tbsp unsalted butter, softened (56 g)
- 1 tbsp olive oil (15 ml)
- 2 tsp fine sea salt (10 g)
- 1 tsp freshly ground black pepper (2 g)
- 4 garlic cloves, finely grated or minced (12 g)
- 1 tbsp finely chopped fresh rosemary (about 3 g)
- 1 tbsp fresh thyme leaves (about 3 g)
- 1 medium lemon, finely zested, then halved (about 100 g)
- 1 medium yellow onion, cut into wedges (about 150 g)
- 1 cup low-sodium chicken or turkey broth (240 ml)
Instructions
- Thaw and prepare the turkey. Make sure the breast is fully thawed before roasting; a partly frozen center cooks unevenly and makes the timing hard to predict. Remove the packaging and any neck or giblet packet, if included. Pat the turkey very dry with paper towels, including the skin and the cavity, and set it breast-side up on a tray while you prepare the seasoning. Wash your hands and clean any surface or utensil that touched raw poultry.
- Heat the oven and make the herb butter. Set a rack in the middle of the oven and preheat it to 325°F (163°C). In a small bowl, mix the softened butter, olive oil, salt, pepper, garlic, rosemary, thyme, and lemon zest until evenly combined. The oil makes the butter easier to spread; it is not essential, so you can use an extra tablespoon of softened butter if needed.
- Season the breast. Gently loosen the skin over the thickest part of the breast with your fingers, taking care not to tear it. Spread about two-thirds of the herb butter directly over the meat beneath the skin, then rub the remaining butter over the outside. Put the onion wedges and lemon halves in the bottom of a roasting pan, place a roasting rack over them, and set the breast on the rack, skin-side up. Pour the broth into the pan beneath the rack, not over the seasoned skin.
- Roast until the thickest part reaches a safe temperature. Roast uncovered for an estimated 2 hours 30 minutes to 3 hours; for the recipe timing, allow about 2 hours 45 minutes. Begin checking after 2 hours 15 minutes, since breast shape, starting temperature, and individual ovens affect the cooking time. Insert an instant-read thermometer into the thickest part of the breast without touching bone. The USDA FSIS safe minimum internal temperature for poultry is 165°F (74°C); check more than one thick area and continue roasting if any reading is lower. If the skin becomes deeply browned before the center is ready, loosely cover the breast with foil.
- Rest, then carve. Transfer the cooked breast to a carving board and rest it for 20 minutes before slicing. Resting gives the juices time to settle and makes the meat easier to carve; it does not replace the thermometer check. Cut along the breastbone and follow the bone with a sharp knife to remove each lobe, then slice across the grain. Spoon a little pan juice over the slices if you like. Discard the onion and lemon from the pan, or strain the drippings if you are making gravy.
Tips
- Use the right thermometer position. The breast is thickest near the center, but the probe should not touch the breastbone or sit in the cavity. Bone can give a misleading reading. If you have a leave-in probe, place it in the thickest meat before roasting and verify with an instant-read thermometer in another thick spot at the end.
- Salt the skin and meat, not just the pan. Getting some herb butter beneath the skin seasons the meat directly and helps keep the surface flavorful. If the skin is difficult to loosen, work slowly with your fingertips rather than forcing a knife under it. You can still rub the butter over the outside if the skin tears.
- Choose a salt substitute carefully. If using kosher salt instead of fine sea salt, use about 1 tablespoon (9 g) Diamond Crystal kosher salt or 2 teaspoons (10 g) Morton kosher salt; crystal sizes differ, so measuring by weight is most reliable. Dried herbs also work: use 1 teaspoon dried rosemary and 1 teaspoon dried thyme in place of each tablespoon of fresh herbs. Their flavor will be more concentrated.
- Do not rely on frequent basting. Opening the oven repeatedly lets heat escape and can extend the roast. The butter beneath the skin and the rest after roasting help keep the slices moist without constant attention. If you want crisp skin, keep the breast uncovered unless it is browning too quickly.
Serving Suggestions
Slice the breast shortly before serving and arrange it on a warm platter, spooning a small amount of strained pan juices over the meat. It pairs well with mashed potatoes, roasted carrots or Brussels sprouts, green beans, stuffing, and cranberry sauce. Because turkey breast is leaner than a whole bird with dark meat, a sauce or gravy is especially welcome. For quick gravy, skim excess fat from the pan drippings, whisk a little flour into the fat in a saucepan, and gradually add strained broth and drippings while whisking until smooth and thickened. Keep the sides simple if the turkey is the main event, or serve the carved meat with salad and bread for a lighter meal.
Variations
Use a different herb blend: Swap rosemary and thyme for 1 tablespoon (about 4 g) chopped sage and 1 tablespoon (about 3 g) chopped parsley. Sage gives the roast a classic savory, autumnal flavor; parsley keeps the mix fresh and mild. A small amount of dried poultry seasoning can also replace the fresh herbs, but check its label before adding more salt.
Add warm spices: Stir ½ teaspoon (about 1 g) smoked paprika into the butter for a subtle smoky note and deeper color. For a brighter, slightly peppery version, add 1 teaspoon (2 g) finely grated fresh ginger and replace the lemon zest with orange zest. Keep the salt amount the same, and avoid adding sweet glazes early in the roast because sugar can darken before the center is cooked.
Make it dairy-free: Replace the butter with 4 tablespoons (60 ml) olive oil or a plain plant-based butter suitable for roasting. The result will still be fragrant, although the skin may brown differently and the herb mixture will be looser. Check the breast for doneness exactly as written; changing the fat does not change the safe internal temperature.
Adapt for a boneless breast: The same seasoning works, but a boneless roast is more compact and can cook faster than an 8 lb bone-in breast. Follow the package’s shape and weight, begin checking early, and use the thermometer rather than transferring the bone-in timing directly. The center must still reach 165°F (74°C).
Storage and Reheating
Refrigerate leftover turkey within 2 hours of cooking, sooner if the room is very warm. Remove the meat from the bone and store it in shallow, airtight containers so it cools promptly. Keep it refrigerated at 40°F (4°C) or colder and use it within 3 to 4 days. Store gravy separately. For longer storage, freeze sliced or chopped turkey in airtight freezer containers; it keeps best quality for about 2 to 3 months. Thaw frozen leftovers in the refrigerator rather than on the counter.
To reheat, put slices in a covered baking dish with a splash of broth or gravy and warm them in a 325°F (163°C) oven until they reach 165°F (74°C), the USDA FSIS safe temperature for reheated leftovers. Thin slices can also be warmed gently in a covered skillet with a little broth, stirring or turning them so they heat evenly. A microwave works for individual portions: cover the dish, heat in short intervals, rotate or stir, and check the center with a food thermometer. Avoid reheating the entire batch more than once, since repeated warming dries the meat and makes temperature control harder.
Frequently Asked Questions
How long does an 8 lb turkey breast take at 325°F?
Plan on roughly 2½ to 3 hours for an 8 lb bone-in breast at 325°F (163°C), with about 2 hours 45 minutes as a useful planning estimate. It may finish earlier or take longer depending on its shape, how cold it was when it went into the oven, and oven accuracy. Start checking before the estimated finish and cook to 165°F (74°C) in the thickest meat.
Should I roast the turkey breast covered or uncovered?
Roast it uncovered so the skin can brown. If the surface gets dark well before the center is cooked, lay a loose piece of foil over the breast for the remaining time. Avoid wrapping it tightly: a tight cover traps steam and softens the skin. A loose foil tent after roasting is also useful if the breast needs to rest while you finish side dishes.
Does an 8 lb turkey breast need to be basted?
No. Basting is optional and is not needed for this recipe because the butter is placed beneath and over the skin, while the broth in the pan provides moisture for drippings. Opening the oven repeatedly to baste can lengthen cooking. If you do baste for personal preference, do it quickly and use clean utensils that have not touched raw turkey.
Can I cook the turkey breast from frozen?
This recipe is written for a fully thawed breast, which makes the timing and seasoning more predictable. Thaw it in the refrigerator on a tray, allowing roughly 24 hours for every 4 to 5 lb (1.8 to 2.3 kg), so an 8 lb breast generally needs about two days. If it is still frozen, do not use the thawed-breast timing; follow current USDA guidance for roasting poultry from frozen and verify 165°F (74°C) in multiple thick areas.
Can I prepare the turkey breast the day before?
You can mix the herb butter a day ahead and refrigerate it in a covered container, then soften it enough to spread before seasoning. You can also season the raw breast and refrigerate it covered, but keep it separate from ready-to-eat foods and do not leave it at room temperature. Roast it fully on the day you plan to serve it, and follow the same thermometer and resting steps.
How do I keep sliced turkey breast from drying out?
Do not overcook it, and let it rest for 20 minutes before carving so the slices retain more juice. Slice only what you plan to serve and keep the rest covered; for leftovers, store the meat promptly with a little broth or gravy if convenient. Reheat covered and gently, checking that it reaches 165°F (74°C) without leaving it in the oven longer than necessary.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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