how long to cook an arm roast in the oven


How long should an arm roast cook in the oven for optimal tenderness?

How Long to Cook an Arm Roast in the Oven

Arm roast is one of the most flavorful and affordable cuts of beef. It’s perfect for a cozy family dinner or a grand feast with friends. If you’re wondering how long to cook an arm roast in the oven, this article will guide you through the process from start to finish.

Preparing the Arm Roast

The first step of cooking a succulent arm roast is to prepare it properly. This cut of meat has a lot of connective tissues and can be tough if not cooked correctly. Therefore, marinating the beef is essential to tenderize it and infuse it with flavor. For best results, marinate the arm roast in your favorite marinade for at least 4 hours or overnight in the fridge.

Cooking the Arm Roast in the Oven

Once you’ve marinated the arm roast, it’s time to cook it. Preheat your oven to 350°F and take the beef out of the fridge to sit for an hour to reach room temperature. Season the arm roast with salt and pepper or your preferred spice blend. Then, place the beef in a roasting pan with the fatty side up and add vegetables if you like, such as carrots and onions, around it.

Cooking time depends on the size of the arm roast and how well done you prefer your beef. Generally, it takes around 30-35 minutes per pound for a medium-rare roast, 40-45 minutes per pound for medium, and 50-55 minutes for a well-done roast.

Checking the Arm Roast for Doneness

To ensure that your arm roast is cooked to perfection, use a meat thermometer to check its internal temperature. Insert the thermometer into the thickest part of the roast, taking care not to touch the bone if there is one. The temperature readout should be as follows:

  • 130°F for rare
  • 135 °F – 140°F for medium-rare
  • 145°F – 150°F for medium
  • 155°F – 165°F for well-done

Once you’ve achieved your desired temperature, take the arm roast out of the oven and let it rest for at least 10 minutes to allow the juices to redistribute. Then, carve the beef into slices against the grain and serve it with your favorite sides and sauces.


If you follow these steps, you’ll be able to cook a mouthwatering arm roast in the oven that your family and guests will love. The preparation and cooking time may vary depending on the size and desired doneness of the beef, but with the help of a meat thermometer, you can prevent overcooking or undercooking the roast. So, fire up your oven and get ready to impress your tastebuds!

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