how long to cook a 5 lb roast beef

Common Names

Approx weight
Rare (125 °F)
Medium (145 °F)
5 lb
1 hr 20 min
1 hr 41 min
6 lb
1 hr 35 min
2 hr
7 lb
1 hr 51 min
2 hr 15 min
8 lb
2 hr 9 min
2 hr 33 min

I love roast beef au jus, with horseradish sauce and Yorkshire Pudding—perhaps its my British ancestry, or maybe Im just a traditionalist.

I found this amazing piece of beef at the grocery store and decided it was the perfect time to make some delicious roast beef. Making the perfect roast beef is super easy. The keys are to make sure you get a good cut of beef, season it properly, and pay attention to your oven temperature, and it will come out great. I always sear my roast in a skillet before baking it—I love it crispy on the outside, and I think it really helps trap the juices inside.

Be sure to use an oven thermometer to make sure the beef is cooked to the appropriate temperature. Dont rely just on the given oven times—everyones ovens are different and you want to slice into a perfect roast.

Roast Beef and Vegetables with Au Jus

  • 2 lb (1 kilo) top rump of beef, room temperature
  • olive oil, for drizzling
  • salt
  • freshly ground pepper
  • 2 tsp thyme
  • 1 lb (500 g) new potatoes, halved
  • 2 onions, peeled and chopped
  • 3 carrots, peeled and chopped
  • 2 sticks celery, roughly chopped
  • 1 bulb garlic, broken into cloves and peeled
  • 2 bay leaves
  • pan drippings from the roast
  • ½ cup red wine
  • 2 cups beef stock
  • 1 tsp butter

Step 3: Make salt and pepper rub

In a small bowl, combine oil, salt, pepper. Rub on all sides of the roast except for bottom.

Step 5: Place on pan or rack

Place the roast in a roasting pan fitted with a roasting rack. Or place it directly on your oven rack with a pan beneath to catch drippings. If your roast has a fat strip it should be on top.

5 lb

FAQ

How long does it take to cook a 5 lb roast at 350 degrees?

If you’re up for some light math, here’s a rule of thumb: For every pound of meat you’re roasting at 350°F, it will take approximately 18 minutes for rare, 20 minutes for medium, and 25 minutes for well-done. But your cook time can vary widely based on the cut used.

How long does it take to cook a 5 lb roast to medium?

Regardless of the size of your roast, aim to cook at 375 degrees F (190 degrees C) for 20 minutes per pound.

What is the cooking time and temperature for roast beef?

Cut
Preheat Oven to…
Roast For…
Premium oven roast (prime rib, sirloin, tenderloin)
425°F (220°C)
30 min.; reduce heat to 300°F (150°C) and cook 2-2 ½ hours.
Oven roast (inside round, outside round, sirloin tip, cross rib)
425°F (220°C)
40-50 min. (20 min per lb)

How long to cook a 5 lb roast at 250 degrees?

Cooking a beef roast at 250 degrees Fahrenheit typically requires about 30 minutes per pound for medium-rare doneness. For medium doneness, aim for 35 minutes per pound. It’s important to use a meat thermometer to check for the desired internal temperature, which is 145°F for medium-rare and 160°F for medium.

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