How to Cook Corned Beef in the Oven

This is how to cook corned beef in the oven at 350 perfectly! Add potatoes with our popular mustard sauce for the most fork tender brisket ever. Baked, this has never been easier to make, you’re going to love it year round.

Corned Beef in Oven

So I had shared almost all the ways to cook this packaged beef, except in the oven. I guess I am just a small countertop appliance girl that those were my go tos. Yes you can make it a lot quicker and just as tender if you follow our Ninja Foodi corned beef and cabbage recipe. You may not have that though.

Everyone has an oven so it was time to cover all my basis. Then year to year you can decide which way to go, or what is your favorite amongst them all. Basically the same ingredients are needed for all of them.

Is flat cut or point cut corned beef better?

So let’s talk about the two choices you will encounter at the store. You’ll find point and flat cut, the latter is WAY better. It is just a bit more expensive but tenderer with a bit more fat so it stays moist. Trust me, just start with the best of the best with this. You do not need to add anything else but I would suggest either potatoes or an onion.

Should you rinse corned beef before you cook it?

DON’T DO IT y’all. You love this hunk of meat because of the brine it has been soaked in. That great salty flavor is because of that. There is still some remaining on the outside when you take it out of that package. It will have a stronger (what you normally would expect at a restaurant) flavor if you don’t rinse it first.

Should you cook cabbage with your corned beef brisket?

Y’all, don’t skip the veggies I’m telling you. I suggest serving with baked cabbage steaks, that are so buttery and delish. You can put it in near the end on another shelf until tender. I wouldn’t cook anything with your meat other than potatoes since those take a long time too.

Ingredients

• 2.5-3 lb corned beef brisket is a good size, ours was 2.66 lbs
• Beer broth or water
• 2 potatoes quartered, optional
• Mustard sauce with items below mixed together
  • Brown sugar
  • Yellow mustard
  • Dijon mustard
  • Honey

Of course Corned beef Mustard Sauce on top is optional but let me tell you that it is SO popular with everyone. Poured over the top in the last 15 minutes allows it to brown just a bit on top and kinda’ bake on. TONS of flavor this adds, a bit sweet and savory at the same time.

If you have had a forgetful moment and your meat is not defrosted I have a tip!! You can cook frozen corned beef low and slow this way.

I used a 9×13 dish and everything fit nicely. You do need something with high sides so the liquid stays contained. You need enough beer or broth so that your meat is at least half way submerged. A roasting pan with water or beer would work well too.

How to Bake Corned Beef Brisket in Oven

• Preheat oven to 350 degrees F. Lay brisket with the fat pad on the top in the dish.
• Wash potatoes and quarter them on a cutting board, place around meat with skins facing up.
• Sprinkle spice packet over top of meat.
• Pour cup of beer or liquid over the top of everything. Cover your pan with foil tightly.
• Bake meat and vegetables for 3 hours for a 2.5-3 lbs size or about 1 hour per pound + about 10 min.
• Then remove aluminum foil, whisk up mustard sauce in a small bowl and pour over the top of the meat.
  • make sure is covers the whole top and is dripping on to the sides.
• Put back into oven uncovered for 15 minutes.
• Remove, put foil on top to keep warm and allow to rest for 10 minutes before slicing.
• Serve with tender potatoes seasoned with salt and pepper, and slow cooker cabbage and enjoy.

Now mine didn’t actually come with a seasoning packet rather it just had a dollop on one side. I just scooped it up and smeared it on top of the fat since that was facing up. For another low and slow, make our Dutch Oven corned beef in the oven if you have that pot.

What temperature should you cook corned beef in the oven?

350 Fahrenheit is ideal. Low and slow is the best. The only exception to this rule is if you were to cook Instant Pot corned beef. That of course is much higher in temp and pressure, quicker, but turns out just as good. You can’t bake the sauce on to the top in that machine though.

You just throw the beef and vegetables right in there with liquid so it steams to tender under that foil and that is it really. If you wanted to use a larger pan you could add large chunks of peeled carrots in there as well. Or make our Southern fried cabbage in a Dutch Oven on the stovetop with it, turns out amazing.

Corned Beef in the Oven Low and Slow

Now let’s talk about a variety of simple cabbage recipes you could make and serve with it. Now you could put a few leaves of it under your foil in the last 20 minutes or so to wilt, sure. We really found that we liked it better when cooked separate and then served up together when done like;

How long do you cook corned beef at 350 degrees?

That depends on the size, weight and thickness but about 3 hours is generally what you should keep in mind. A bit more than 1 hour per pound is just about perfect and best if you add our mustard sauce to the top for the last 15 minutes.

What to do with leftovers

And then let’s talk leftovers. You should use one of many leftover corned beef recipes on my site because I just hate wasting food.