Pork Tenderloin with Dijon Mustard Sauce

Lean pork tenderloin is well suited to quick, bistro-style cooking: it sears to a golden crust while staying tender enough to slice neatly for serving. Here it is paired with a classic Dijon pan sauce, made from the savoury browned bits left in the frying pan, softened shallot, white wine and thyme. Crème fraîche rounds the mustard’s sharpness without making the sauce heavy, while a little butter gives it a glossy finish. The result is a simple French-leaning dinner with a creamy, tangy sauce that works naturally with potatoes, greens or a crisp salad.
Cuisine style French bistro-style
Cooking style Minimal cleanup
Time commitment Under 1 hour

Why this recipe works

  • Pan-built flavour: Searing the pork first leaves savoury browned bits in the pan, which become the base of the wine and mustard sauce.
  • Smooth, tangy sauce: Crème fraîche softens the sharpness of Dijon mustard and gives the sauce a rounded, lightly creamy finish.
  • Fast enough for weeknights: The pork and sauce are cooked in the same pan, keeping the method efficient without sacrificing depth of flavour.

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Timing notes

  • Rest before slicing: Let the pork rest briefly after cooking so the juices settle and the slices stay tender.
  • Serve the sauce gently warm: Once the crème fraîche is added, keep the sauce over low heat and serve soon after it thickens.

Common mistakes

  • Avoid firm, dry pork: Pork tenderloin is lean, so stop cooking as soon as it feels springy rather than hard.
  • Do not boil the sauce: A hard boil after adding crème fraîche can make the sauce split; gentle heat keeps it smooth.

Ingredient notes

  • Use a proper Dijon mustard: Dijon gives the sauce its clean sharpness and savoury depth; a very sweet mustard will change the balance.
  • Fresh herbs suit the quick sauce: Fresh thyme perfumes the pan without needing a long simmer, while tarragon gives a more classic bistro-style note.

Serving ideas

  • Serve with potatoes or greens: Buttery potatoes, mash, green beans or sautéed greens work well with the creamy mustard sauce.
  • Pair with a dry white wine: A crisp dry white echoes the wine in the sauce and balances the richness of the crème fraîche.

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Ingredients
Instructions
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  1. Pat the pork dry, then season all over with the fine sea salt and black pepper. Peel and finely chop the shallot, and strip a few thyme leaves from the sprigs (keep the sprigs for the pan).
  2. Heat a frying pan over medium-high heat and add the unsalted butter. When it foams, add the pork and thyme sprigs, then sear for 2 to 3 minutes per side until well browned all over.
  3. Turn the heat down to medium and continue cooking, turning occasionally, for 6 to 10 minutes until the pork is just cooked through and the juices run clear. Transfer to a board and rest for 5 minutes.
  4. Pour off any excess fat, leaving a thin coating in the pan, then add the shallot with the thyme leaves. Cook for 1 to 2 minutes until softened, then pour in the dry white wine and simmer for 2 to 3 minutes, scraping up any browned bits, until reduced by about half.
  5. Lower the heat and stir in the Dijon mustard and crème fraiche until smooth and lightly thickened, about 1 to 2 minutes; do not let it boil. Slice the pork and spoon the sauce over to serve.

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Recipe notes

Tips

  • For the juiciest result, stop cooking the pork as soon as it feels springy but not firm, then let it rest so the juices settle before slicing.
  • Keep the sauce at a gentle heat once the crème fraiche goes in; a hard boil can cause it to split.
  • If serving anyone who should avoid alcohol, simmer the wine thoroughly so the sauce reduces well and the flavour mellows.

Substitutions

  • Replace Crème fraiche with double cream for a richer, silkier sauce.
  • Replace Fresh thyme with fresh tarragon for a more aniseed, classic bistro-style note.
  • Replace Dry White Wine with dry sherry for a deeper, slightly nutty sauce.

Storage

  • Refrigerate up to 2 days
  • Cool leftovers quickly, then refrigerate in a sealed container. Reheat the pork and sauce gently in a frying pan over low heat with a splash of water, stirring often, until piping hot; avoid boiling the sauce.

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Pork Tenderloin with Dijon Mustard Sauce
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Recipe overview

  • Servings: 2 servings
  • Total time: 35min (25min active)
  • Difficulty: Easy
  • Cuisine: French
  • Allergens:
    Milk Mustard
Beginner friendly One pot

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