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How Many Minutes Per Pound Does It Take To Cook A Frozen Roast Beef?

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There is nothing more frustrating than thinking you have something to make for dinner and having your pantry and refrigerator fail you. 

However, there is nothing better than finding a perfect piece of frozen roast beef in your freezer a few hours before you need to get dinner on the table because, believe it or not, you can successfully cook a frozen roast beef!

Though the process to cook a frozen roast beef takes longer than cooking a defrosted piece of meat, the texture, flavor, and integrity of the meat are not in danger when cooking from frozen.

So, how many minutes per pound does it take to cook a frozen first beef? Generally speaking, cooking frozen roast beef takes about 50% longer than the correct cooking time for unfrozen roast beef. So, for medium-rare roast beef, you cook for about 30-35 minutes per pound, for medium roast beef, you cook for about 40-45 minutes per pound. 

Keep reading to learn about the best seasonings to use when cooking your frozen roast beef, how long to cook a frozen roast beef, as well as cooking methods to stay away from when cooking frozen roast beef. 

What Is Roast Beef?

Roast beef is a delicious and popular cut of meat. Basically, it is any cut of beef that has been roasted in an oven

Roasts can be made with different cuts of beef but work best with top round roast, ribeye roast, chuck roast, tenderloin roast, and prime rib roast.

Roast beef can be eaten fresh out of the oven, and it is sometimes considered a pot roast, which is traditionally served with potatoes, onions, and carrots. The other popular way roast beef is eaten is in deli sandwiches.

Regardless of how it’s consumed, if it’s a piece of beef that is roasted in an oven, it is still considered roast beef.

Tips For Cooking Frozen Roast Beef

There are steps you should take when preparing to cook a roast beef and they become even more important when preparing a frozen roast beef. 

Keep these steps in mind when cooking your frozen roast beef:

Rinse The Meat

Before you do anything to the meat, you want to rinse it to get any excess frost or ice off it

This will help when handling it as it becomes less slippery, but also will help with allowing the spices to stick to the meat. 

Once you have rinsed it, dry it as much as you can with paper towels. Of course, it’ll still be frozen, but having a dry outside will help it develop a crust. 

Season The Meat

Make sure to heavily season the roast beef. You want to use salt, pepper, and any other herbs or seasoning you may like.

Some popular ways to flavor roast beef are with thyme, rosemary, sage, oregano, garlic, mustard seed, and butter

Another way to ensure your roast beef is tender and flavorful is by using chicken or beef broth in the cooking process. 

Simply put the piece of beef on a rack over a roasting pan and fill the bottom of the roasting pan with broth. You can also include aromatics like onion, garlic and herbs in the broth for extra flavor.

Use A Meat Thermometer

Using a meat thermometer is extremely important when cooking any cut of meat, but is especially important when cooking frozen meat.

Of course, we can gauge how long meat is going to need to be cooked, but not all cuts of meat are the same. 

Maybe prep time goes quicker for some, so the meat needs a little longer, where someone who takes the meat out and preps for a while does not need as much cooking time in the oven.

The safest way to ensure your meat is cooked to your desired temperature is by using a meat thermometer.

How Many Minutes Per Pound Will It Take To Cook A Frozen Roast Beef? 

Cooking time for beef all depends on how much the piece of beef weighs.

Medium rare roast beef is 135°F and medium roast beef is 145°F.

For medium-rare roast beef you cook for about 30-35 minutes per pound, for medium roast beef you cook for about 40-45 minutes per pound

Here is a chart explaining how long it takes to cook a frozen roast beef to get it to these desired temperatures:

(This is in a preheated oven of 400-500°F)

Weight of MeatMedium Rare (135°F)Medium (145°F)
2lbs 1 hr—1 hr and 10 min1 hr and 20 min—1 hr and 30 min
3lbs1 hr and 30 min—1 hr and 45 min2 hr—2 hr and 15 min
4lbs2 hr—2 hr and 20 min2 hr and 40 min—3 hr
5lbs2 hr and 30min—2 hr and 55 min3 hr and 20 min—3 hr and 45 min
6lbs3 hr—3 hr and 30 min4 hr—4 hr and 30 min

Related Questions

Now that we’ve gone over how to figure out the length of cooking time in reference to the weight of your roast beef, let’s take a look at a few related questions on the subject!

Can I cook frozen roast beef in a crockpot?

Unfortunately, a crockpot does not get hot enough quick enough to safely cook frozen roast beef

The roast beef will not rise to a safe enough temperature in time, and it puts you at a high risk for bacterial growth. 

Can I cook frozen roast beef in an instant pot?

If you are using the pressure cooker option on the instant pot then it is safe to cook frozen roast beef

Unlike the crockpot, the instant pot raises to the proper temperature quick enough to avoid bacteria growth.

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