Cooking a 1kg roast beef to tender, juicy perfection is easier than you think. With the right time and temperature, your oven can turn out amazing roast beef worthy of any occasion. In this article, we’ll go over everything you need to know to nail roast beef cooking times for a 1kg cut.
Whether you prefer your roast beef rare, medium-rare or well-done, we’ve got the ideal oven settings and methods to help you achieve it Let’s get cooking!
Determining the Correct Cooking Time
The most important factor in cooking 1kg roast beef is allowing enough time for the interior to reach your desired level of doneness Here are general time guidelines based on a 1kg size
- Rare – 30-35 minutes
- Medium-rare – 35-40 minutes
- Medium – 45-50 minutes
- Well-done – 55-60+ minutes
For the most accurate cooking time, use an instant-read meat thermometer to check the internal temperature:
- Rare – 120-125°F (49-52°C)
- Medium-rare – 130-135°F (54-57°C)
- Medium – 140-145°F (60-63°C)
- Well-done – 160°F (71°C) and above
If roasting bone-in beef, extend cooking time about 5-10 minutes since the bone acts as an insulator. Let the roast rest at least 10-15 minutes before slicing to allow juices to redistribute.
Choosing the Right Temperature
To achieve the best results, roast at a high temperature for browning then reduce heat to gently finish cooking. Use these oven settings:
- Preheat oven to 450°F (230°C)
- Cook roast at 450°F for the first 15 minutes
- Reduce temperature to 300°F (150°C) and continue roasting until desired doneness
Higher initial heat helps develop a flavorful crust. Lower heat afterward cooks the interior evenly without drying out the meat.
For well-done beef, maintain a steady 325-350°F (160-180°C) the entire time. The lower temperature prevents overcooking.
Preparing the Roast for the Oven
Proper prep ensures flavorful, tender meat:
- Let roast sit at room temperature 30 minutes before cooking – Helps meat cook evenly
- Season well with salt, pepper, herbs – Enhances flavor
- Use a heavy roasting pan – Promotes even heating
- Place roast on a rack in the pan – Allows air circulation for better browning
- Tie roast tightly with butcher’s twine – Maintains shape for more even cooking
Checking for Doneness
Always rely on a meat thermometer for accuracy. Insert into the thickest part without touching bone or pan. Oven temperatures can vary.
The roast will continue cooking a bit after removing from the oven. Take it out 5°F before the target temperature to prevent overcooking.
Letting the roast rest afterwards allows the temperature to rise another 5-10°F for perfect doneness.
Resting and Carving the Roast Beef
Never skip this essential step! Resting gives juices time to redistribute so they don’t spill out when sliced.
After roasting:
- Lightly cover with foil and let rest 15-20 minutes
- Slice across the grain for tender meat
- Serve immediately for hottest roast beef
Slicing against the grain shortens the beef fibers for the most tender, melt-in-your-mouth texture.
Cooking Methods for Ideal Results
- Roasting uncovered promotes browning and maximum flavor
- Low and slow cooking keeps meat tender and juicy
- Cooking to proper internal temperature eliminates guesswork
- Resting before slicing keeps juices locked in
Follow these guidelines for perfect medium-rare 1kg roast beef every time. With the proper cooking time, temperature, and method your roast beef will come out of the oven beautifully browned, tender, and mouthwateringly juicy. Enjoy!
Tips for The Best Roast Beef
- Every oven is different, so the timing will vary. Use a meat thermometer to check if your roast is done for the most accurate cooking time. In order to get medium rare meat, the meat should be heated to 135°F. For medium well meat, it should be heated to 145°F.
- How long it takes to cook depends on the size and shape of your roast. First brown the roast at 225°F for about 30 minutes per pound. This is a good rule of thumb for a medium rare roast. Just to be safe, check at least 30 minutes before it’s due to be done.
- A roast with bones may need to cook a little longer than one without bones because the bone can keep the heat in.
- You can rub your roast with butter or olive oil if it doesn’t have any fat on it. Or, to add some fat, put some bacon slices on top of the roast. If you use butter, it will brown faster, so keep an eye on it and cut the time it takes to brown at first.
How to Store Roasted Beef
- Wrap leftover roast beef in plastic or foil and put it in the fridge for three to five days.
- We suggest cutting the roast into pieces to make it easier to use later, but you can freeze the whole thing. Once it’s cool enough, double-wrap it in foil or plastic and then put it in a zip-top bag, making sure to squeeze out as much air as you can.
- To thaw, defrost in the refrigerator overnight. Warm it up again in an oven set to 350°F for 10 to 15 minutes.
Classic Roast Beef
FAQ
How long does it take to cook 1 kg of roast beef?
What is the cooking time and temperature for roast beef?
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Cut
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Preheat Oven to…
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Roast For…
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Premium oven roast (prime rib, sirloin, tenderloin)
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425°F (220°C)
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30 min.; reduce heat to 300°F (150°C) and cook 2-2 ½ hours.
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Oven roast (inside round, outside round, sirloin tip, cross rib)
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425°F (220°C)
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40-50 min. (20 min per lb)
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Do you cook roast beef at 325 or 350?
How long to cook a roast by weight?
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Approx weight
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Rare (125 °F)
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Medium (145 °F)
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3 lb
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25 min
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37 min
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4 lb
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34 min
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48 min
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5 lb
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45 min
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1 hr
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6 lb
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57 min
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1 hr 11 min
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How long do you cook a 1 kg roast beef?
Preheat your oven to 120°C (250°F). Roast the beef uncovered for 3-4 hours, or until the desired internal temperature is reached. Pot Roast Vs Roast Beef: Which One Is Your Pick? The internal temperature of your roast determines its doneness: The roasting time for a 1 kg roast beef varies depending on the method and desired doneness:
How long do you cook a roast in the oven?
Place the roast in the oven and bake for about 15 minutes, then reduce the heat to 375 F (190 C). Roast for about 13-15 minutes per pound for rare, 17-19 minutes for medium, and 22-25 for cooked through. Check the meat with a thermometer to make sure it is the temperature you want it–145°F for medium rare, 160°F for medium.
How to cook a 1kg roast beef in the oven?
To cook a 1kg roast beef in the oven, start by preheating it to 240°C/220°C fan/gas 9 for 20 minutes for best results. Then, turn down the temperature to 180°C/160°C fan/gas 4 and continue cooking until the roast reaches the desired internal temperature.
How do you cook a roast beef in a crock pot?
This recipe is for cooking roast beef in the oven. A crock pot is not mentioned in the provided instructions. Here’s how to cook a roast beef in the oven: Step 1 Recommended: let roast sit uncovered on a wire rack set in a baking sheet in the refrigerator 1 hour, up to overnight. Step 2 Preheat oven to 450°. In a small bowl, combine oil, garlic, rosemary, thyme, salt, and pepper. Rub all over roast. Step 3 Place roast in roasting pan fitted with a roasting rack.