How Long to Cook a Corned Beef in the Oven


Cooking a corned beef can be a tricky and intimidating process, especially if you’re a beginner. The good news is that it doesn’t have to be: this recipe will walk you through the steps of cooking corned beef in an oven or Instant Pot so that you can make it without fail. We’ll also explain how long each method takes so that you know exactly what to expect when cooking your own corned beef at home!

What is corned beef?

Corned beef is a cured and pickled beef brisket. It’s traditionally served on St. Patrick’s Day, but you can enjoy it at any time of year.

In Ireland, corned beef is also called “junket.”

How long to cook a corned beef in the oven

Corned beef is a cut of beef that has been cured with salt. It can be cooked in the oven, on the stovetop or in a slow cooker. The cooking time depends on the size of your corned beef and the cut.

The most common way to cook corned beef is by boiling it for about an hour until tender enough to eat without much chewing required (though some people prefer their meat to be more chewable). However, if you don’t have time for boiling or want something different than what your grandparents did when they were growing up–or even just because they didn’t have access to modern appliances like microwaves back then–we’ve got options!

Cooking a corned beef in an Instant Pot

  • Cooking a corned beef in an Instant Pot:
  • Place the corned beef on a trivet or steamer basket, if you have one (this will keep it out of the liquid). Cover with water and cook for 60 minutes at high pressure. Let it rest for 10-15 minutes before serving.


Cooking times for 3 lb. Corned Beef

  • Cooking times for a 3 lb. corned beef:
  • Cook for 3 hours and 15 minutes at 350 F (180 C).
  • Cook for 4 hours and 30 minutes at 325 F (160 C).
  • Cook for 5 hours and 45 minutes at 300 F (150 C).

The actual cooking time depends on the size of your corned beef and the cut.

The actual cooking time depends on the size of your corned beef and the cut. Cooking times vary from 1 to 3 hours, depending on the size of your corned beef. For example, if you’re using an oven-ready brisket (a cut that’s been cured and brined), it’ll take about 3 hours to cook at 325 degrees Fahrenheit (163 Celsius).


Corned beef is a classic dish that can be enjoyed on its own or as an ingredient in other recipes. You can cook it in the oven, Instant Pot or slow cooker, depending on what time you have available and how much work you want to do!

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