A 1-pound pork tenderloin is a lean, boneless cut that cooks quickly and is easy to slice for dinner. For this method, sear it briefly, then roast at 425°F (218°C) for about 15 minutes; use a thermometer, not the clock alone, to know when it is done.
Ingredients
- 1 pork tenderloin, about 1 pound (454 g), silver skin removed if needed
- 1 tablespoon olive oil (15 ml)
- 3/4 teaspoon kosher salt (about 4 g; use a little less if using fine table salt)
- 1/2 teaspoon freshly ground black pepper (about 1 g)
- 1/2 teaspoon garlic powder (about 1.5 g)
- 1/2 teaspoon paprika (about 1 g), sweet or smoked
- 1 teaspoon chopped fresh thyme (about 1 g), or 1/2 teaspoon dried thyme (about 0.5 g), optional
Instructions
- Heat the oven and prepare the pork. Set a rack in the center of the oven and preheat to 425°F (218°C), allowing about 15 minutes for the oven to heat. Take the tenderloin from the refrigerator while the oven warms, but do not leave raw pork at room temperature for an extended period. Pat it dry thoroughly with paper towels. If it has a thin, shiny membrane of silver skin, slide a small sharp knife just beneath it and trim it away without removing much meat.
- Season the tenderloin. In a small bowl, mix the salt, pepper, garlic powder, paprika, and thyme if using. Rub the pork all over with the olive oil, then distribute the seasoning evenly over every side. Keep the seasoning on the surface rather than piling it at one end. If the tenderloin has a noticeably thin tail, tuck the tail under and tie it loosely with kitchen twine so the thickness is more even and the thinner end is less likely to overcook.
- Sear it in a hot pan. Set an oven-safe skillet, preferably cast iron or stainless steel, over medium-high heat. When the pan is hot, place the tenderloin in it. Sear for about 1 minute on each of its four sides, turning with tongs, for roughly 4 minutes total. The goal is browned patches, not a fully cooked center. If the pan is smoking heavily, lower the heat slightly. If you do not have an oven-safe skillet, sear in a regular skillet and transfer the pork to a small roasting pan.
- Roast until it reaches temperature. Transfer the skillet to the preheated oven. Roast for about 15 minutes, beginning to check the center after 12 minutes because tenderloins vary in thickness and ovens vary in accuracy. Insert an instant-read thermometer into the thickest part from the side, keeping the probe away from the pan. USDA FSIS sets 145°F (63°C), followed by a 3-minute rest, as the safe minimum for whole cuts of pork; remove the tenderloin when the thickest section reaches that temperature. If it is below the target, return it to the oven and check again after 2 to 3 minutes.
- Rest, then slice. Transfer the pork to a clean cutting board and let it rest for 3 minutes before slicing. This is the required rest associated with the USDA FSIS safe minimum temperature, and it also gives the juices a moment to settle. Slice across the grain into rounds about 1/2 inch (1.3 cm) thick. A faint blush of pink can remain in properly cooked pork; color alone is not a reliable doneness test.
- Serve with the pan juices. If the skillet contains browned juices, spoon a little over the slices. Avoid touching cooked pork with tongs or a plate that held it raw unless those items have been washed. Serve promptly while warm.
Tips
- Check the label and shape. Pork tenderloin is a long, narrow cut that commonly weighs around 1 pound. It is not the same as pork loin, which is much larger and thicker and needs a different cooking time. If your package contains two small tenderloins rather than one, cook them side by side and check each separately because their thicknesses may differ.
- Use temperature as your final guide. The 15-minute roast estimate assumes a tenderloin close to 1 pound and a fully heated oven. A cold pan, a crowded oven, a thicker-than-usual piece, or a thermometer that reads differently can change the timing. Insert the probe into the center of the thickest area, and avoid repeatedly opening the oven while it cooks.
- Adjust the seasoning if needed. Dried rosemary or Italian seasoning can stand in for thyme; use the same amount of dried herbs and expect a more pronounced, less fresh herbal flavor. You can replace paprika with a pinch of chili powder for gentle warmth, or leave it out. If using salted butter or a salty spice blend in place of oil or seasoning, reduce the added salt.
- Do not skip drying and resting. A dry surface browns more readily than a wet one, while resting makes the tenderloin easier to slice neatly. Avoid cutting it immediately after it leaves the oven: the juices can run onto the board, and the center may not have completed its 3-minute rest.
Serving Suggestions
Serve the sliced tenderloin as the main course with roasted potatoes, rice, buttered noodles, or crusty bread to catch the pan juices. For vegetables, pair it with green beans, broccoli, roasted carrots, or a crisp salad. Because the meat is lean and its seasoning is savory but not strongly spiced, it works well with both simple weeknight sides and a brighter sauce.
For an easy finishing touch, squeeze a little lemon over the slices or serve mustard at the table. A spoonful of applesauce or a lightly sweet fruit chutney also complements pork without requiring changes to the roasting method. If you are serving several sides, slice the tenderloin just before bringing it to the table so the pieces stay warm and moist for longer.
Variations
Try a mustard-herb coating. Spread 1 tablespoon (15 g) Dijon mustard over the oiled tenderloin, then apply the salt, pepper, and thyme. The mustard adds tang and helps the herbs adhere; it will mellow as the pork roasts. Since mustard can contain salt, taste your seasoning blend and reduce the added salt slightly if the mustard is particularly salty.
Add a little heat. Mix 1/4 teaspoon (about 0.5 g) cayenne pepper or red pepper flakes into the spice mixture. This gives the crust a noticeable kick without changing the cooking time. For a smoky, mild variation, use smoked paprika instead of sweet paprika and leave out the cayenne.
Use a simple pan sauce. After moving the cooked pork to its cutting board, carefully place the hot skillet on the stove. Add 1/3 cup (80 ml) low-sodium chicken broth and scrape up the browned bits with a wooden spoon. Simmer for 1 to 2 minutes, then turn off the heat and stir in 1 teaspoon (5 g) butter if desired. The sauce is optional, and its flavor will depend on how deeply the skillet browned; do not use broth or a spoon that contacted raw pork.
Storage and Reheating
Refrigerate leftover pork within 2 hours of cooking, in a shallow airtight container. It keeps for 3 to 4 days in the refrigerator. For easier reheating, store the slices with any pan juices or sauce so the meat has a little moisture around it. If you will not use the leftovers within that period, freeze them in a well-sealed freezer-safe container; for best texture, use within about 2 to 3 months and thaw overnight in the refrigerator.
Reheat only the amount you plan to eat. Warm sliced pork gently in a covered skillet with a spoonful of water or broth over low heat, or microwave it covered in short intervals, turning the slices between intervals. Reheat leftovers to 165°F (74°C), checking with a food thermometer. High heat and prolonged reheating can dry out this lean cut, so stop as soon as the food reaches the safe reheating temperature. Discard pork left at room temperature for more than 2 hours, or more than 1 hour in temperatures above 90°F (32°C).
Frequently Asked Questions
How long does a 1-pound pork tenderloin take to cook?
With this recipe, allow about 4 minutes to sear and roughly 15 minutes to roast at 425°F (218°C), then rest it for 3 minutes. Start checking the internal temperature at 12 minutes of roasting. The total time from starting the oven to serving is about 47 minutes, including an estimated 15-minute preheat and 10 minutes of hands-on preparation; an already-hot oven shortens the elapsed time.
What temperature should pork tenderloin reach?
For a whole cut of pork, USDA FSIS recommends a minimum internal temperature of 145°F (63°C), followed by a 3-minute rest. Check with an instant-read food thermometer at the thickest point rather than relying on the meat’s color or a fixed cooking time. If the tenderloin has an uneven shape, check the thick end and, when practical, confirm the temperature in another thick section.
Should I cover pork tenderloin while it roasts?
No. Leave it uncovered for this method so the surface stays exposed to the oven’s heat and the seared exterior does not steam. Covering is not necessary to reach the safe temperature, and it can soften the browned surface. After cooking, you can loosely tent the pork with foil while it completes its 3-minute rest, but avoid wrapping it tightly.
Can I cook it without searing first?
Yes. You can roast the seasoned tenderloin directly in an oven-safe pan at 425°F (218°C), checking the temperature in the thickest part after about 15 minutes. Without searing, the outside will be less deeply browned and the roasting time may differ slightly. Continue cooking as needed to reach 145°F (63°C), then give the pork its full 3-minute rest.
Can I prepare the pork ahead of time?
You can trim and season the tenderloin several hours ahead, cover it, and refrigerate it until you are ready to cook. For food safety, keep raw pork refrigerated and do not leave it out to warm for a long period. Pat off any moisture on the surface before searing. Cooked leftovers should be refrigerated within 2 hours and used within 3 to 4 days.
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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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