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Classic Steak Diane Recipe with Cognac Pan Sauce

If you’re craving a retro favourite, you can’t go past a classic Steak Diane. It works perfectly as a simple weeknight steak dinner or as an elegant plate to impress someone special. The real star is the silky, savoury Diane sauce — a combination of butter, cream, mustard, brandy (or Cognac) and a splash of Worcestershire that lifts the steak to another level.

Diane sauce being ladled over a cooked steak

What is Steak Diane?

Steak Diane is a classic dish of pan-seared steak finished in a rich, creamy pan sauce. Traditionally prepared tableside in restaurants, the sauce combines aromatics (shallot or eschallot), cream, mustard, brandy or Cognac, and Worcestershire sauce. The result is a glossy, flavourful sauce that coats the steak and adds depth without overpowering the meat.

What steak should I use?

Classic versions of Steak Diane often call for thinly pounded cuts so the meat cooks quickly, but you can use a thicker, well-marbled cut for more flavour. In this recipe a “NY” strip steak (New York strip) with a bit of fat left on delivers great flavour when the fat renders in the pan. If you prefer leaner cuts, eye fillet (tenderloin) or rump will also work. Remember: fat equals flavour, and a hot pan is your friend for a good sear.

steaks on a chopping board
Choose your preferred steak

Ingredients

  • 200 g NY strip steak (adjust to your appetite)
  • 25 g butter
  • 1 shallot, finely diced (real shallots are smaller and sweeter than spring onions)
  • 60 ml cream, thin or pouring cream (avoid pre-thickened retail creams with stabilisers)
  • 2 tbsp brandy (Cognac if you want a more traditional touch)
  • 2 tsp Dijon mustard
  • 1 tbsp Worcestershire sauce
  • 1 tbsp parsley, finely chopped
  • 1 tsp salt and 1 tsp freshly cracked black pepper (adjust to taste)
steak Diane cooked in a frying pan

Instructions

  1. Season the steak with salt and cracked pepper. Heat a heavy frying pan or skillet over high heat until very hot.
  2. Sear the steak to your preferred doneness: about 2–3 minutes per side for medium-rare depending on thickness. Remove the steak from the pan and set aside to rest while you make the sauce.
  3. Reduce the heat to medium. Add the butter to the same pan and allow it to melt, stirring to pick up the browned bits left from the steak.
  4. Add the finely diced shallot and sauté for a few minutes until softened and translucent — do not let it brown too much.
  5. Pour in the brandy, scraping the pan to deglaze and lift any fond. Allow the alcohol to reduce briefly (take care if you choose to flambé; keep a lid and heat source safety in mind).
  6. Add the cream, Dijon mustard and Worcestershire sauce. Bring the sauce to a gentle boil and let it thicken slightly so it coats the back of a spoon.
  7. Stir in the chopped parsley and adjust seasoning with salt and freshly cracked pepper.
  8. Return the steaks to the pan for a minute to warm through and coat in the sauce. Plate the steaks and spoon extra Diane sauce over them. Serve immediately.
steak diane recipe

Top tips

  • Steak alternatives: If you prefer a different cut, try eye fillet (tenderloin), rump, or even veal or pork. The sauce is the defining element, so feel free to adapt the protein.
  • Butter matters: Use good-quality butter for the best flavour — it combines with the cream to form the luxurious base of the Diane sauce.
  • Brandy vs Cognac: Cognac is traditional and adds a refined aroma, but a good brandy works well and is more budget-friendly.
  • Don’t over-reduce: Keep the sauce slightly loose so it glazes the steak; it will thicken a bit as it cools while plating.
  • Resting time: Always rest the steak for a few minutes after cooking so the juices redistribute and the meat stays tender.
two steaks in a frying pan with Diane sauce
Look at that beautiful sauce in the pan

Side dishes

  • Roasted Greek-style potatoes (patates sto fourno)
  • Carrot and dill mash
  • Sautéed rainbow chard with olive oil and lemon
  • Classic green beans or buttered peas for a lighter option

Recipe summary

Prep time: 10 mins • Cook time: 15 mins • Serves: 1

Steak Diane is a quick, restaurant-style dish made by searing a steak and finishing it in a creamy, mustard- and brandy-flavoured sauce. It’s nostalgic, satisfying and surprisingly easy to prepare at home.

Nutrition (approx.)

Serving: 1 • Calories: 941 kcal • Carbohydrates: 11 g • Protein: 44 g • Fat: 73 g

This nutrition information is approximate and provided for convenience.

© Souvlaki For the Soul