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Slow roast beef recipe for tender, flavourful results

Slow roast beef is a quintessential dish that embodies comfort and indulgence, perfect for special occasions or a hearty family dinner. This high-protein delight features a prime New York strip roast, seasoned generously with kosher salt and freshly ground pepper, then infused with the aromatic flavours of garlic and rosemary. The slow cooking process ensures a tender, melt-in-your-mouth experience, while the drizzle of extra-virgin olive oil adds a rich depth to every bite.

Ideal for those seeking a satisfying meal, this slow roast beef pairs beautifully with warm rolls and tangy cornichons for a delightful contrast. The addition of a creamy sauce made from Greek yogurt, soured cream, and horseradish elevates the dish, providing a refreshing kick that complements the richness of the meat. Perfect for a celebratory feast, this recipe brings everyone together around the table, making it a memorable culinary experience.

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Ingredients for Slow roast beef

  • 1.8 kg new york strip roast, preferably prime, untied

  • kosher salt, freshly ground pepper

  • 6 garlic cloves, finely grated

  • 45 g finely chopped rosemary

  • 75 ml extra-virgin olive oil, divided

  • 120 g plain full-fat greek yogurt

  • 120 g soured cream

  • 30 g prepared horseradish

  • 2.5 ml finely grated lemon zest

  • warm rolls and cornichons (for serving) (optional)

How to make Slow roast beef

  1. Lightly score the fat cap of the roast, making cuts about 2 cm apart with a sharp knife, taking care not to slice into the flesh.

  2. Generously season the roast on all sides with salt and pepper.

  3. In a small bowl, mix together the garlic, rosemary, and 45 ml of oil, then rub the mixture all over the roast.

  4. Loosely cover the roast with cling film and chill for at least 12 hours, or up to 2 days.

  5. Preheat the oven to 95°C (fan oven).

  6. Place the roast on a wire rack set inside a large rimmed baking tray.

  7. Roast the meat until an instant-read thermometer inserted into the thickest part registers 48°C–49°C for medium-rare, which will take about 2½ hours.

  8. Allow the roast to rest for 1 hour; the internal temperature will continue to rise to 52°C–54°C.

  9. In a small bowl, mix together the yogurt, sour cream, horseradish, and lemon zest, then season the sauce with salt to taste.

  10. Heat the remaining 30 ml of oil in a large frying pan over medium heat.

  11. Cook the roast just until browned, about 2 minutes per side.

  12. Transfer the roast to a cutting board and thinly slice.

  13. Serve with horseradish sauce, rolls, and cornichons.

  14. The beef can be roasted and browned up to 3 days in advance. Cover and chill, then let sit at room temperature for 1–2 hours before serving.

Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

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Article history

The information on this page is peer reviewed by qualified clinicians.

  • 30 Oct 2025 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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