How Long to Cook a 1kg Roast Beef for Perfect Medium-Rare or Medium?

Learn the ideal cooking time and temperature to roast a 1kg beef for medium-rare or medium, plus resting tips for juicy results.

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To cook a 1kg roast beef, preheat your oven to 240°C (464°F) and roast for 20 minutes. Then, reduce the heat to 190°C (374°F) and cook for an additional 25 minutes per 500g for medium-rare, or 30 minutes per 500g for medium. Always allow the beef to rest for at least 15 minutes before carving to retain its juices and ensure maximum flavor.

FAQs & Answers

  1. What is the best oven temperature for cooking roast beef? Start roasting at a high temperature of 240°C (464°F) for 20 minutes, then reduce to 190°C (374°F) to continue cooking evenly.
  2. How long should I rest roast beef after cooking? Rest the roast beef for at least 15 minutes after cooking to allow juices to redistribute, making the meat juicy and tender.
  3. How can I tell if my roast beef is medium-rare or medium? Cook for 25 minutes per 500g at 190°C for medium-rare, or 30 minutes per 500g for medium doneness. Using a meat thermometer, medium-rare is about 57°C (135°F) and medium about 63°C (145°F).