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Best Oven-Baked Corned Beef and Cabbage with Horseradish Cream Sauce

A plate of sliced corned beef garnished with herbs, served with boiled cabbage, carrots, and potatoes. A small dish of creamy sauce topped with chopped chives is on the side.
This oven-baked corned beef and cabbage transforms the traditional boiled dinner into something truly extraordinary with a mustard-brown sugar glaze, tender vegetables, and a creamy horseradish sauce!
Sarah Allison
Prep Time 30 minutes
4 hours
Total Time 4 hours 30 minutes
Serving Size 6

Equipment

Ingredients

For the corned beef

  • 3.5 pound flat-cut corned beef brisket with seasoning packet
  • 2 tablespoons dijon mustard
  • 1 tablespoon brown sugar
  • 1 yellow onion, thickly sliced (about ½-inch thick slices)
  • 3 cloves garlic, minced
  • 1 cup water
  • 1 cup Irish stout, such as Guinness

For the vegetables

  • 1.5 pounds Yukon gold potatoes, quartered
  • 4 medium carrots, cut into 2-inch chunks
  • 1 small head green cabbage cored and cut into 6-8 thick slices
  • 2 tablespoons unsalted butter, melted
  • 1 tablespoon prepared horseradish, drained
  • Salt and freshly ground black pepper, to taste
  • 2 tablespoons chopped fresh parsley optional, for garnish

For the horseradish cream sauce

  • 1 cup sour cream
  • 2 tablespoons prepared horseradish
  • 2 tablespoons Dijon mustard
  • 1 tablespoon mayonnaise, optional
  • 1 teaspoon lemon juice or white wine vine
  • Salt and freshly ground black pepper to taste
  • Chopped fresh chives or parsley for garnish (optional)

Instructions

  • Preheat your oven to 325°F (160°C).
  • Rinse the corned beef under cold water and pat dry with paper towels.
  • In a small bowl, mix together the Dijon mustard and brown sugar until well combined.
  • Place the quartered onion in the bottom of a large Dutch oven or heavy-bottomed roasting pan.
  • Position the corned beef on top of the onions, fat side up.
  • Spread the mustard-sugar mixture evenly over the top of the corned beef.
  • Sprinkle the minced garlic over and around the meat, then add the contents of the seasoning packet.
  • Pour the water and Irish stout around (not over) the corned beef. The liquid should come about halfway up the sides of the meat.
  • Cover the Dutch oven tightly with its lid (or use heavy-duty aluminum foil if using a roasting pan).
  • Place in the preheated oven and cook undisturbed for 2.5 hours.
  • While the beef is cooking, prep your vegetables. In a large bowl, toss the quartered potatoes and carrot chunks with the melted butter and horseradish mixture. Season lightly with salt and pepper.
  • After the beef has cooked for 2.5 hours, carefully remove the Dutch oven from the oven.
  • Arrange the seasoned potatoes and carrots around the corned beef, then place the cabbage wedges on top of the vegetables and around the sides of the meat.
  • Cover the pot again and return it to the oven for another 1 hour, until the beef reaches an internal temperature between 190-200°F (88-93°C) and the vegetables are tender.
  • While the beef and vegetables finish cooking, prepare the horseradish sauce. In a mixing bowl, combine the sour cream, prepared horseradish, Dijon mustard, and mayonnaise (if using).
  • Add the lemon juice or vinegar and stir until the mixture is smooth and well blended.
  • Season with salt and freshly ground black pepper to taste.
  • Cover and refrigerate the horseradish sauce for at least 30 minutes to allow the flavors to meld.
  • When everything is cooked, transfer the corned beef to a cutting board and tent it loosely with aluminum foil.
  • Let it rest for 10-15 minutes to allow the juices to redistribute.
  • Using a sharp knife, slice the corned beef against the grain into thin slices.
  • Arrange the sliced corned beef on a platter with the vegetables surrounding it.
  • Sprinkle with freshly chopped parsley if desired.
  • Serve with the horseradish cream sauce on the side.
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Notes

- For the best texture, let the beef reach 190-200°F. This may seem high compared to other beef dishes, but corned beef requires a higher temperature to become properly tender.
- The horseradish sauce can be prepared up to 3 days in advance and stored in the refrigerator in an airtight container.
- For a no-alcohol version, replace the stout with additional water or apple cider.
- Leftover corned beef is delicious in sandwiches, hash, or as corned beef sliders!
Planning Tip: A 4-pound package of corned beef will shrink to about 2.5 pounds after cooking.
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