For a 1½-pound (680 g) boneless pork tenderloin, roast at 400°F (200°C) for about 20–25 minutes, then check the thickest part with a thermometer. The tenderloin is ready at 145°F (63°C), followed by a 3-minute rest; this simple recipe seasons the lean, quick-cooking cut with garlic, paprika, and thyme.
Weight gives you a useful starting point, but thickness and your oven affect the exact cooking time, so temperature—not the clock—is the reliable doneness check. Pork tenderloin is a narrow, very lean cut, not the larger pork loin roast; the two cuts need different cooking times.
Ingredients
- 1 boneless pork tenderloin, about 1½ lb (680 g), silver skin removed
- 1 tbsp olive oil (15 ml)
- 1 tsp fine salt (6 g)
- ½ tsp freshly ground black pepper (1 g)
- 1 tsp garlic powder (3 g)
- 1 tsp paprika (2 g)
- 1 tsp dried thyme (1 g)
- 1 tsp brown sugar (4 g), optional, for a lightly browned, gently sweet crust
Instructions
- Heat the oven and prepare the pan. Set a rack in the middle of the oven and preheat it to 400°F (200°C). Line a rimmed baking sheet with foil for easier cleanup, or use a small roasting pan. If the tenderloin has been refrigerated, it can go straight into the oven; there is no need to leave raw pork out to warm up.
- Trim and dry the pork. Pat the tenderloin dry with paper towels. If a thin, shiny strip of connective tissue remains on the surface, slide a small sharp knife just beneath it and trim it away, taking care not to cut off much meat. Removing silver skin helps the finished slices feel tender. If one end is much thinner than the other, tuck that narrow end under and tie it loosely with kitchen twine, or simply check it early so it does not overcook.
- Season all sides. Stir together the salt, pepper, garlic powder, paprika, thyme, and optional brown sugar. Rub the pork with olive oil, then coat it evenly with the seasoning mixture. Place it on the prepared pan with the thicker end toward the hotter area of your oven if you know your oven has a hot spot. The oil helps the spices adhere; it does not need to form a thick coating.
- Roast and check the temperature. Roast for about 20–25 minutes. Begin checking at 20 minutes, inserting an instant-read thermometer into the center of the thickest section without touching the pan. The USDA FSIS safe minimum for a whole cut of pork is 145°F (63°C), followed by a 3-minute rest. Remove the tenderloin when the center reaches 145°F (63°C); do not keep roasting just to reach a particular color, because safely cooked pork can still look slightly pink. If it has not reached temperature, return it to the oven and check again after a few minutes.
- Rest, then slice. Transfer the tenderloin to a cutting board and let it rest for at least 3 minutes before slicing. The required rest is included in the recipe’s total time. Slice across the grain into rounds about ½ inch (1.3 cm) thick and serve with any juices collected on the board. If you prefer thicker medallions, cut them closer to ¾ inch (2 cm); they are easier to turn into a plated main course, while thinner slices work well in sandwiches.
Tips
- Use a thermometer rather than relying on minutes per pound. Tenderloins vary in thickness, and a narrow piece can finish sooner than a heavier one. Check the center of the thickest part, then check again after a short return to the oven if needed. A thermometer with a thin probe is especially helpful for this small cut.
- Check the package and cut before cooking. A pork loin roast is wider and often weighs several pounds; it will take substantially longer than the 1½-pound tenderloin in this recipe. If the package contains two small tenderloins, they can roast together, but leave space between them and assess each one separately because their thicknesses may differ.
- Swap the seasonings to suit what you have. Use dried oregano or rosemary instead of thyme, or replace paprika with ground cumin for a warmer, earthier flavor. If you only have smoked paprika, use the same amount for a noticeable smoky note. Fresh garlic can replace garlic powder, but minced garlic may brown more quickly on the surface.
- Keep the roasting simple. This lean cut does not need a long marinade or a high-heat blast to cook through. Avoid piercing it repeatedly with a fork, and do not slice it immediately after it leaves the oven; resting gives the juices a chance to settle so they are less likely to run onto the board.
Serving Suggestions
Serve the sliced pork with roasted potatoes, rice, or buttered noodles to catch the pan juices. For a vegetable side, try green beans, broccoli, carrots, or a simple salad with a sharp vinaigrette. Since the tenderloin’s seasoning is savory and mild, it pairs well with fruit-based accompaniments such as applesauce or roasted apples, as well as a spoonful of mustard sauce. If serving several people, arrange the slices on a warm platter and spoon the resting juices over them just before bringing the platter to the table.
For a quick meal, put the slices over a grain bowl with greens and a lemony dressing, or tuck them into rolls with cabbage slaw and mustard. Slice only what you expect to serve right away if you want to keep the remaining piece moist for later meals. A sauce is optional: a little pan juice, a splash of broth, or a spoonful of prepared mustard can be enough without covering the pork’s seasoning.
Variations
Herb and lemon: Season with thyme or rosemary, then add 1 tsp (5 ml) finely grated lemon zest to the oil and spice rub. Serve with lemon wedges. The citrus brightens the savory seasoning without changing the basic roasting time.
Maple-mustard glaze: Stir together 1 tbsp Dijon mustard (15 g) and 1 tbsp maple syrup (15 ml). Brush a thin layer over the pork during the final 5–7 minutes of roasting. Applying it near the end helps limit scorching; still use the thermometer to determine when the center is done.
Spiced version: Replace the thyme and paprika with ½ tsp ground cumin (1 g) and ½ tsp chili powder (1 g), keeping the salt and garlic powder. Serve with rice, beans, or a lime wedge. Chili powder blends vary in heat and salt, so taste your blend before adding extra salt.
Fresh-herb finish: Keep the original seasoning and scatter chopped parsley or chives over the sliced pork just before serving. If using fresh herbs in place of dried thyme in the rub, use about 1 tbsp (3 g) chopped leaves. Fresh herbs give a brighter, less concentrated flavor, so they are particularly nice as a finishing touch.
Storage and Reheating
Refrigerate cooked pork within 2 hours of cooking, storing it in a covered, shallow container with any collected juices. It keeps for 3–4 days in the refrigerator. For longer storage, freeze the cooled slices or whole remaining portion in an airtight freezer-safe container; use within about 2–3 months for best quality. Thaw frozen pork in the refrigerator rather than on the counter.
To reheat slices without drying them out, place them in a covered skillet with a tablespoon or two of water or broth and warm gently over low heat. You can also use a covered microwave-safe dish, heating in short intervals and turning or rearranging the slices as needed. Reheat leftovers to 165°F (74°C), checking with a food thermometer. Avoid prolonged heating: because tenderloin is lean, it can become dry if left warming after it reaches the target temperature.
Frequently Asked Questions
How long does pork tenderloin take at 400°F?
A 1½-pound (680 g) tenderloin generally takes about 20–25 minutes at 400°F (200°C), followed by a 3-minute rest. Start checking at the early end of the range. A thinner tenderloin may finish sooner, while a thicker one may need additional minutes. Oven time is a guide, not a guarantee, so use a thermometer in the thickest part and cook to 145°F (63°C).
How do I know when pork tenderloin is done?
Check the center of the thickest portion with an instant-read thermometer. For a whole cut of pork, the USDA FSIS safe minimum is 145°F (63°C), with a 3-minute rest. Color is not a dependable test: pork at a safe temperature can have a slight pink tint, and pork that looks white may still need more cooking. If the reading is below 145°F (63°C), return it to the oven and check again shortly.
Should I cover pork tenderloin while it roasts?
No. Roast it uncovered so the surface can brown rather than steam. Covering is useful later if you need to keep cooked meat warm briefly, but it is not necessary for the cooking method here. If the surface browns more quickly than expected, check the internal temperature; do not assume that a darker exterior means the center is done.
Should I sear pork tenderloin before roasting?
Searing is optional, not required. This recipe roasts the seasoned tenderloin directly, which keeps preparation straightforward and gives the surface time to brown in the oven. If you want a deeper crust, brown it in a hot oven-safe skillet with a little oil for about 1–2 minutes per side, then transfer the skillet to the oven. Searing adds active cooking time, so the recipe’s timing estimate assumes you skip it.
Can I cook two tenderloins at the same time?
Yes, as long as they fit in the pan with space around them so hot air can circulate. Two tenderloins do not necessarily take twice as long as one, but the final time depends on their thickness and how crowded the pan is. Check each tenderloin separately and remove each one when its center reaches 145°F (63°C), then give it the required 3-minute rest.
Is pork tenderloin the same as pork loin?
No. Tenderloin is a smaller, narrow muscle that cooks quickly; pork loin is a larger, wider roast and needs a different cooking time. Look for “pork tenderloin” on the package and check its weight and shape before using this timing. If you have a pork loin roast, do not follow the 20–25-minute estimate here; use a recipe and temperature checks suited to that larger cut.
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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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