How to Roast Corned Beef in an Oven

Corned beef is best prepared in a slow cooker, but you can roast it in the oven as well.
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Juicy, tender corned beef comes out best with long, slow baking with some moisture. And while you can stick it in your slow cooker, you can also opt to roast it in the oven.

Things You'll Need

  • 8-lb. corned beef brisket

  • Paper towels

  • Electric roaster

  • 2 cups water, apple juice or apple cider, dark beer

  • Meat thermometer

  • 1/2 cabbage, cut in wedges

  • 8 small potatoes, quartered

  • 2 small onions, quartered

  • 4 large carrots, cut into 1-inch pieces

  • 2 medium rutabaga, peeled and quartered

  • Serving platter

  • Foil

How to Roast Corned Beef in the Oven

  1. Preheat the roaster for 10 to 15 minutes at 250 degrees Fahrenheit.
  2. Trim off most of the surface fat off the brisket with a sharp knife.
  3. Rinse the meat and pat it dry with paper towels.
  4. Allow the roast to sit for 30 minutes on the counter to come to room temperature.
  5. Place the roast in the roaster pan that fits into the electric roaster.
  6. Add the liquid, such as water, apple juice or cider, or a dark beer.
  7. Put the roasting pan in the roaster, and put on the lid.
  8. Test the temperature of the corned beef after 4 hours. Once it's reached about 140 degrees Fahrenheit, put the cabbage, potatoes, onions, carrots and rutabaga around the roast.
  9. Put the lid back on, and let the roast bake for another hour.
  10. Since corned beef retains its pink color when cooking, the best way to judge doneness is when the internal temperature reaches 145 degrees Fahrenheit, measured with a thermometer inserted into the thickest part of the roast.
  11. Remove the corned beef from the roaster and put it on a platter.
  12. Cover it loosely with foil and let it sit for 15 minutes before slicing.
  13. Drain the vegetables and serve them beside the sliced corned beef or serve them as a soup with the broth from the roast.


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Tips for Roasting Corned Beef

  • Use the leftover corned beef for sandwiches with coleslaw. Reheat leftover vegetables in some of the broth from the roaster.
  • Rinse off the seasonings that come on the corned beef. Corned beef has a distinct flavor and often no other seasonings than onion and vegetables are needed.
  • Use a roaster oven for cooking a whole corned beef roast, which can weigh from 8 to 12 pounds.
  • A smaller roast may not need to cook as long. Check the temperature after 2 hours for a roast under 4 pounds.