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Rare Roast Beef with Mustard and Garlic Soured Cream

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A classic and elegant roast beef dish featuring tender, juicy rare beef served with a creamy mustard and garlic soured cream sauce. Perfect for special occasions or a refined family dinner with simple ingredients and bold flavor.

Ingredients

  • 3 lb (1.4 kg) beef roasting joint (rib roast, sirloin, or tenderloin)
  • 2 tbsp olive oil
  • 2 tsp salt
  • 1 tsp black pepper
  • 2 tbsp fresh rosemary or thyme, chopped (optional)
  • 1 cup soured cream or sour cream
  • 2 tbsp Dijon mustard
  • 2 garlic cloves, finely minced
  • 1 tbsp lemon juice
  • 2 tbsp fresh chives, chopped
  • 1/2 tsp salt
  • 1/4 tsp black pepper

Instructions

  1. Remove the beef from the refrigerator 30 minutes before cooking to bring it closer to room temperature.
  2. Preheat the oven to 425°F (220°C).
  3. Rub the beef with olive oil, salt, black pepper, and fresh herbs if using.
  4. Place the beef on a roasting rack in a roasting pan.
  5. Roast until the internal temperature reaches 120–125°F (49–52°C) for rare doneness, approximately 40–50 minutes depending on the cut and size.
  6. Remove the roast from the oven and allow it to rest for 15–20 minutes before slicing.
  7. While the beef rests, combine the soured cream, Dijon mustard, garlic, lemon juice, chives, salt, and black pepper in a bowl.
  8. Stir until smooth and well blended.
  9. Slice the roast beef thinly against the grain.
  10. Serve with generous spoonfuls of the mustard and garlic soured cream sauce.

Notes

  • Use a meat thermometer for accurate doneness.
  • Whole-grain mustard can replace Dijon for added texture.
  • Fresh herbs such as parsley, dill, or tarragon can be added to the sauce.
  • Roasted garlic may be used for a milder, sweeter garlic flavor.
  • Allowing the beef to rest is essential for retaining juices.
  • Serve with roasted potatoes, vegetables, Yorkshire pudding, or a green salad.

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