How Long to Cook a Pork Tenderloin Roast

A pork tenderloin roast is a lean, tender cut seasoned with a savory paprika, garlic, and herb rub, then roasted until juicy and lightly browned. At 425°F (220°C), two 1¼-pound (570 g) tenderloins typically take about 20–22 minutes; use a thermometer, not the clock alone, to confirm they reach a safe temperature.

Ingredients

2 pork tenderloins, about 1¼ pounds (570 g) each, for 2½ pounds (1.13 kg) total
1 tablespoon (15 ml) olive oil
1 tablespoon (12 g) packed light brown sugar
1 tablespoon (15 g) Dijon mustard
2 garlic cloves, finely grated or minced, about 2 teaspoons (6 g)
1 teaspoon (2 g) smoked paprika
1 teaspoon (1 g) dried thyme
1 teaspoon (6 g) fine salt
½ teaspoon (1 g) freshly ground black pepper
1 teaspoon (5 ml) olive oil or neutral oil for the roasting pan, if needed
1 lemon, cut into wedges, for serving (optional)

Instructions

Heat the oven and prepare the pork. Put a rack in the center of the oven and heat it to 425°F (220°C). Line a rimmed baking sheet with foil for easier cleanup, or set a small roasting pan aside. Remove the tenderloins from their packaging and pat them dry with paper towels. If a thin, shiny strip of silverskin remains, slide a small sharp knife just underneath it and trim it away without cutting off much meat. Leave the tenderloins whole; cutting them into medallions would change the cooking time.
Mix the seasoning. In a small bowl, stir together the olive oil, brown sugar, Dijon mustard, garlic, smoked paprika, thyme, salt, and pepper. The mixture should form a loose paste. Spread it over all sides of both tenderloins, using your hands or a spoon to coat the ends as well as the thicker centers. If the pork is unusually wet, pat it dry once more before adding the paste so the seasoning clings rather than sliding off.
Arrange the tenderloins. Place the pork on the prepared pan with a little space between the pieces. If one end of a tenderloin is very thin, tuck it underneath itself to make the piece more even in thickness; this helps that end cook at a similar rate to the center. Keep the two tenderloins separate rather than tying them together, since each piece cooks on its own schedule. Slide the pan into the hot oven.
Roast and check early. Roast for about 20–22 minutes, then check the thickest part of each tenderloin with an instant-read food thermometer. Insert the probe from the side into the center of the meat, avoiding the pan. The USDA FSIS safe minimum for whole cuts of pork is 145°F (63°C), followed by a rest of at least 3 minutes. If a tenderloin has not reached 145°F (63°C), return it to the oven and check again after 2–3 minutes; thinner pieces may finish first and can be taken out separately.
Rest before slicing. Transfer the cooked pork to a clean cutting board and let it rest for 5 minutes. The required 3-minute rest is included in this longer rest. Resting gives the juices time to settle and makes the tenderloin easier to slice neatly. Do not leave the meat at room temperature for an extended period; slice and serve while warm.
Slice and serve. Cut across the grain into slices about ½ inch (1.3 cm) thick. Spoon any juices from the board over the slices, and offer lemon wedges if you like a fresh, bright finish. If the two tenderloins are different sizes, check their temperatures individually and expect to remove the smaller one first.

Tips

Make sure you have tenderloin, not pork loin. Pork tenderloin is narrow, usually around 1–1½ pounds (450–680 g) per piece, and cooks quickly. A pork loin roast is much wider and heavier, so it needs a different cooking time. Check the package label before following this method.
Use temperature as your guide. Oven performance, the tenderloin’s thickness, and how cold the meat is when it goes in can all change the timing. Begin checking at 20 minutes rather than assuming every roast needs the same duration. A leave-in probe or instant-read thermometer is much more reliable than judging doneness by color.
Adjust the seasoning if needed. Regular paprika can replace smoked paprika for a milder, less smoky flavor. If you do not have dried thyme, use 1 teaspoon (1 g) dried rosemary or oregano; rosemary tastes more piney, while oregano gives the rub a more Mediterranean character. Dijon adds mild tang and helps the seasoning coat the meat. You can omit it and add another teaspoon of oil, though the rub will be less tangy.
Keep the tenderloin from drying out. This lean cut has little fat, so it can become dry if left in the oven well past its target temperature. Trim only the silverskin, not useful meat, and let the roast rest before slicing. A few pink shades in pork cooked to the recommended temperature can be normal; temperature, rather than a perfectly white interior, is the safety check.

Serving Suggestions

For a straightforward dinner, serve the sliced pork with roasted potatoes, rice, or buttered noodles to catch the seasoned juices. A green vegetable such as green beans, broccoli, or Brussels sprouts balances the rich, savory rub. A crisp salad with apple or fennel is another good match, especially if you serve the lemon wedges alongside the meat.

If you are making a pan sauce, move the pork to its cutting board and set the roasting pan over medium heat only if it is stovetop-safe. Add about ½ cup (120 ml) chicken broth or apple cider and scrape up browned bits with a wooden spoon. Simmer briefly, then taste before adding salt, since the pork juices and seasoning already contribute flavor. Do not pour pan liquid over the meat if it has been contaminated by raw-pork handling; use clean utensils and serve the sauce hot.

Variations

Herb and lemon: Replace the brown sugar and smoked paprika with 1 teaspoon (2 g) finely grated lemon zest and 1 tablespoon (4 g) chopped fresh rosemary. Keep the mustard, garlic, oil, salt, and pepper. The result is less sweet and smoky, with a sharper citrus and herb flavor.

Maple and mustard: Replace the brown sugar with 1 tablespoon (15 ml) maple syrup and increase the Dijon to 1½ tablespoons (22 ml). Brush on the mixture as directed. Maple can brown more quickly than dry sugar, so check the surface near the end and loosely cover the tenderloins with foil if they darken before reaching temperature.

Garlic-free or milder: Leave out the garlic and use sweet paprika instead of smoked paprika. Add ½ teaspoon (1 g) onion powder if you want a little extra savory depth. For a little heat, add ¼ teaspoon (0.5 g) cayenne; it will make the seasoning noticeably spicier without changing the roasting method.

Make one tenderloin: The ingredient quantities can be halved for one tenderloin, but the cooking time will not necessarily be half as long. A single piece of the same thickness may still need about 18–22 minutes. Start checking early and remove it when the center reaches 145°F (63°C), then let it rest at least 3 minutes.

Storage and Reheating

Refrigerate leftover pork within 2 hours of cooking. Store it in a covered, airtight container, ideally sliced with its juices, for 3–4 days. To freeze, wrap slices or a larger portion well and freeze for about 2–3 months for best quality. Thaw frozen pork in the refrigerator rather than on the counter, and use it promptly after thawing.

Reheat only the amount you plan to eat. Put slices in a covered oven-safe dish with a spoonful of broth or water and warm at 300°F (150°C) until heated through, or microwave them in short intervals with a cover to limit moisture loss. Leftovers should reach 165°F (74°C), as checked with a food thermometer. Reheating can dry lean pork, so avoid prolonged high heat and add a little liquid. Cold slices can also be used in sandwiches or salads if they have been stored safely.

Frequently Asked Questions

How long does pork tenderloin take in the oven?
At 425°F (220°C), tenderloins around 1–1½ pounds (450–680 g) each often take about 18–25 minutes, depending on their thickness and your oven. For this recipe, begin checking at 20 minutes. Cook until the thickest part reaches 145°F (63°C), then rest it for at least 3 minutes.

Should I cover pork tenderloin while it roasts?
No. Roast it uncovered so the outside can brown. If the surface is getting too dark before the center reaches temperature, loosely place foil over the pork for the remaining cooking time. Foil is a safeguard against excess browning, not a substitute for checking doneness.

Do I need to sear pork tenderloin before roasting?
No, searing is optional for this method. The high oven temperature helps the seasoned surface brown without adding a separate stovetop step. If you prefer a deeper browned crust, you can sear the pork briefly in a hot oven-safe skillet before roasting, but it may need less time in the oven, so rely on the thermometer.

Can I roast the tenderloins from frozen?
For the most even result, thaw them in the refrigerator first, then pat them dry and season as directed. A frozen tenderloin takes substantially longer and cooks less evenly on the outside and inside, so the timing in this recipe does not apply. Do not thaw pork on the counter; if cooking from frozen, follow a suitable method and use a thermometer to verify the safe temperature.

Why is my pork tenderloin slightly pink inside?
Pork can remain slightly pink even when it is safely cooked. Check the center with a food thermometer: whole cuts of pork are safe at 145°F (63°C) followed by at least a 3-minute rest. Color alone is not a dependable way to tell whether the meat has reached that temperature.

Can I prepare the pork ahead?
You can trim and season the tenderloins, cover them, and refrigerate them for up to 24 hours before roasting. Keep raw pork refrigerated, and do not leave it on the counter while the oven heats. If the rub looks wet after chilling, that is fine; roast according to the same temperature guidance, checking the meat rather than extending the time automatically.

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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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