This mustard-herb pork tenderloin is a quick oven roast with a browned exterior, tender slices, and a simple mustard pan sauce. It pairs lean pork with garlic, rosemary, thyme, and broth, so it feels special enough for company but is straightforward for a weeknight dinner.
Ingredients
- 1 pork tenderloin, about 1½ lb (680 g), silver skin trimmed
- 1 tbsp (15 ml) olive oil
- 1 tbsp (15 g) Dijon mustard, divided
- 2 garlic cloves (6 g), finely grated or minced
- 1 tsp (1 g) finely chopped fresh rosemary, or ½ tsp (0.5 g) dried rosemary
- 1 tsp (1 g) fresh thyme leaves, or ½ tsp (0.5 g) dried thyme
- 1 tsp (5 g) fine sea salt
- ½ tsp (1 g) freshly ground black pepper
- ½ cup (120 ml) low-sodium chicken broth
- 1 tbsp (14 g) unsalted butter
- 1 tsp (5 ml) lemon juice
Instructions
- Heat the oven and prepare the pork. Set a rack in the center of the oven and heat it to 400°F (204°C). Use the preheating time to trim the tenderloin: slide a small sharp knife under any shiny silver skin and cut it away without removing much meat. Pat the pork dry with paper towels so it browns rather than steams. If the tenderloin has a very thin tail, tuck it under and tie it in place with kitchen twine so the meat cooks more evenly.
- Season the tenderloin. In a small bowl, mix the olive oil, 2 teaspoons of the Dijon mustard, garlic, rosemary, thyme, salt, and pepper. Rub the mixture over all sides of the pork. Let it stand while the oven finishes heating, about 5 minutes; there is no need for a long marinade. If the seasoning mixture seems to slide off, pat the pork dry once more and spread the rub in a thin, even layer.
- Sear the meat. Heat an oven-safe skillet over medium-high heat. When it is hot, add the pork and sear for about 1½ to 2 minutes per side, turning with tongs to brown the long sides and ends. The goal is a well-colored surface, not to cook the center through. If the garlic begins to darken quickly, lower the heat slightly; burnt garlic can make the pan sauce bitter.
- Roast until safely cooked. Move the skillet to the oven and roast for about 15 to 20 minutes, turning the tenderloin once if one side is much thinner. Start checking early because tenderloins vary in thickness. Insert an instant-read food thermometer into the thickest part without touching the pan. USDA FSIS lists 145°F (63°C) followed by a 3-minute rest as the safe minimum for whole cuts of pork; cook to that reading and do not rely on color alone.
- Rest the pork. Transfer the tenderloin to a clean cutting board and let it rest for 3 minutes before slicing. Keep the skillet on the stovetop, using an oven mitt because its handle will be hot. Resting is part of the safe-temperature guidance and gives the juices time to settle, which helps the slices stay moist when cut.
- Make the quick pan sauce. Carefully pour off excess fat from the skillet, leaving the browned bits in the bottom. Set it over medium heat, add the broth, and scrape the pan with a wooden spoon to loosen those flavorful bits. Stir in the remaining 1 teaspoon of Dijon and simmer for 2 to 3 minutes, until the liquid is lightly reduced. Turn off the heat and stir in the butter and lemon juice. Taste before adding salt; broth and pan drippings can already be salty.
- Slice and serve. Cut the pork crosswise into slices about ½ inch (1.3 cm) thick. Arrange them on a warm platter and spoon a little sauce over the meat, serving the rest at the table. If the slices show a faint blush while the thermometer has confirmed the safe temperature and rest, that color alone does not mean the pork is undercooked.
Tips
- Choose tenderloin, not pork loin. Pork tenderloin is a narrow, lean cut that usually weighs about 1 to 1½ lb (450 to 680 g) and cooks quickly. A pork loin roast is much larger and thicker, so it needs a different timing; substituting one for the other without adjusting the method can leave the smaller cut dry or the larger cut underdone.
- Use a thermometer in the thickest spot. Cooking time is only a guide because oven performance and the shape of the meat vary. If you have only one thermometer, check the center from the side so the probe reaches the middle. Avoid cutting into the pork repeatedly to check it; each cut releases juices and gives less reliable information than a temperature reading.
- Make an easy herb substitution. If fresh rosemary or thyme is unavailable, use the smaller dried amounts listed above. Dried herbs are more concentrated and have a different, less fresh aroma, so do not swap them teaspoon for teaspoon. Parsley can replace either fresh herb for a milder flavor, though it will not have the same piney or earthy character.
- Keep the sear controlled. A hot pan gives the pork a browned surface, but oil that smokes heavily or garlic that turns dark can spoil the flavor. Start with a thoroughly heated pan, turn the meat as it colors, and reduce the burner if the fond begins to blacken. Brown bits are useful for sauce; black, bitter ones are not.
Serving Suggestions
Serve the sliced pork with the mustard pan sauce and a vegetable or starch that can catch it. Mashed potatoes, buttered egg noodles, rice, or crusty bread all work well; each gives the sauce somewhere to go without competing with the herbs. For a vegetable side, roast carrots, green beans, or broccoli while the pork rests, or serve a crisp green salad with a tart vinaigrette to balance the rich butter in the sauce.
For a simple dinner for four, plan on about 4 to 6 oz (115 to 170 g) of cooked pork per person, with sides making up the rest of the plate. If the tenderloin is closer to 1 lb (450 g), serve more substantial sides or add another vegetable. Slice the meat just before serving rather than leaving it cut on the board; this keeps it warmer and reduces the surface area exposed to air.
Variations
Maple-Dijon: Stir 1 tablespoon (15 ml) maple syrup into the sauce with the remaining mustard. It adds gentle sweetness and makes the sauce more rounded, so pair it with a sharp green salad or a less-sweet vegetable side. Taste before adding extra lemon, then adjust a few drops at a time.
Lemon and parsley: Replace the rosemary and thyme with 1 tablespoon (4 g) chopped fresh parsley and add 1 teaspoon (5 ml) finely grated lemon zest to the rub. This gives the pork a brighter, lighter herbal flavor. Stir another tablespoon of chopped parsley into the finished sauce just before serving; avoid simmering it for long, which dulls its freshness.
Apple pan sauce: After removing the pork, add ½ cup (75 g) finely chopped apple to the skillet and cook for 2 minutes before pouring in the broth. Continue with the mustard and butter as directed. A crisp apple works best because it keeps some texture. The fruit changes the sauce toward a sweet-savory flavor, so lemon juice is especially useful to balance it.
Grainy mustard: Use whole-grain mustard in place of Dijon, keeping the same quantity. The sauce will have visible mustard seeds and a gentler, less smooth texture. If you cannot find Dijon, a mild yellow mustard can stand in, but its sharper vinegar flavor will make the sauce taste more familiar and less rounded; start with a little less and adjust to taste.
Storage and Reheating
Refrigerate leftover pork and sauce within 2 hours of cooking, storing them in separate shallow airtight containers if possible. The pork keeps for 3 to 4 days in the refrigerator. Slicing only what you plan to eat helps the remaining piece stay moist. For longer storage, freeze the pork in a well-sealed container for up to 2 to 3 months for best quality; thaw it in the refrigerator before reheating. Freeze the sauce separately if you want to keep its texture as close as possible to freshly made.
For the best texture, warm slices gently in a covered skillet with a spoonful or two of broth or sauce over low heat, turning once. Heat leftovers to 165°F (74°C), checking with a food thermometer. You can also microwave a portion in a covered microwave-safe dish, using short intervals and turning the pieces between them. Avoid prolonged high heat: tenderloin is lean, and reheating it until very hot throughout can make it dry. Reheat only the portion you intend to serve.
Frequently Asked Questions
Can I prepare the pork ahead of time?
Yes. Trim the tenderloin and mix the rub up to a day ahead, then keep each covered in the refrigerator. For the best browning, pat the pork dry just before applying the rub. You can season it a few hours in advance, but a long soak is unnecessary for this recipe. Allow a few minutes for the skillet and oven to do the cooking; do not leave seasoned raw pork at room temperature while waiting.
Can I cook this without an oven-safe skillet?
Yes. Sear the tenderloin in a regular skillet, then transfer it to a shallow roasting pan or baking dish for the oven. After the pork is cooked, make the sauce in the original skillet on the stovetop, scraping up the browned bits with broth. A baking dish may not collect as much fond, so the sauce can be a little lighter, but it will still be flavorful.
Why did my pork tenderloin turn out dry?
The most common cause is cooking it past the recommended temperature, especially because tenderloin is lean. Thickness changes how quickly it cooks, so begin checking with a thermometer before the shortest estimated roasting time is up. Also leave the pork to rest for 3 minutes and slice across the grain. If the tenderloin is unusually thin, take it out as soon as its thickest section reaches the safe minimum.
Is it okay if pork tenderloin is a little pink?
It can be. Pork may retain a slight pink color even when cooked safely, and color is not a dependable way to judge doneness. Check the thickest part with a food thermometer and follow the USDA FSIS guidance of 145°F (63°C) plus a 3-minute rest for whole cuts of pork. If you do not have a thermometer, get one before relying on appearance or timing.
Can I double the recipe?
Yes, but cook two tenderloins side by side rather than tying them together, leaving space around each one so heat can circulate. Use a large enough skillet for searing, or brown them in batches; crowding the pan makes the meat steam. Roast both and check each tenderloin separately, since even two pieces of similar weight may finish at different times. Double the sauce ingredients if you want the same amount per serving.
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- Pork Kumquat Tenderloin Recipe with Citrus Pan Sauce
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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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