How Long to Cook a 1.5 Kg Roast Beef for Perfect Doneness?

Learn the ideal cooking time and temperature for a 1.5 kg roast beef to achieve medium rare or medium perfection with simple tips.

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For a 1.5 kg roast beef, aim for a cooking time of about 1 hour 40 minutes to 2 hours at a temperature of 190°C (375°F). Begin with 20 minutes at 220°C (430°F) to sear the outside, then lower the oven to 190°C. The exact time can vary based on your oven and how well-done you prefer your beef. Use a meat thermometer to ensure it reaches your desired level of doneness: 60°C (140°F) for medium rare, or 70°C (158°F) for medium. Let it rest for 10-15 minutes before carving for the best texture and flavor.

FAQs & Answers

  1. What is the best oven temperature for cooking roast beef? Start by searing your roast beef at 220°C (430°F) for 20 minutes, then reduce the temperature to 190°C (375°F) for the remainder of the cooking time to ensure even cooking.
  2. How do I know when my roast beef is medium rare? Use a meat thermometer to check the internal temperature; medium rare roast beef should reach 60°C (140°F).
  3. Why should I let roast beef rest before carving? Resting the roast beef for 10-15 minutes after cooking helps the juices redistribute, resulting in a more tender and flavorful meat.

Watch More

For more delicious and perfectly cooked meat recipes, explore our guides on roasting different cuts of beef and mastering meat thermometers to enhance your cooking confidence and results.

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