There’s something timeless and comforting about a hearty corned beef and cabbage dinner—and in the Wall family, it’s a tradition that just wouldn’t feel like St. Patrick’s Day without it. Whether you’re celebrating the holiday or simply craving a cozy, no-fuss meal, this slow cooker version delivers rich flavor with minimal effort. It’s the kind of recipe that fills your home with mouthwatering aromas while it practically cooks itself.
Slow cooking corned beef transforms it into a melt-in-your-mouth centerpiece, while the vegetables soak up all those savory juices. The best part? You can set it and forget it, making it perfect for busy days or relaxed weekends.
To take things up a notch, a sweet and tangy mustard sauce adds the perfect finishing touch to balance the richness of the beef.
Slow Cooker Corned Beef and Cabbage with Mustard Sauce
Ingredients
3 to 4 pounds corned beef brisket (uncooked, with spice packet)
1 onion, chopped into large chunks
3 cloves garlic, sliced
2 bay leaves
2½ to 3 cups water
2 pounds potatoes, peeled and quartered
2–3 large carrots, chopped
1 small head green cabbage, cut into wedges
Method:
Place chopped onion in the bottom of a 6-quart slow cooker. Set the corned beef on top and sprinkle with the included seasoning packet.
Pour in enough water to nearly cover the corned beef. Add garlic and bay leaves.
Cover and cook on low for 8–10 hours.
After 3 hours of cooking, add the potatoes and carrots.
Two hours before serving, add the cabbage wedges.
Once done, remove the corned beef and let it rest for 15 minutes before slicing.
Slice against the grain and serve with the vegetables and mustard sauce.
Mustard Sauce for Corned Beef (Sweet & Tangy)
This family-style mustard sauce is sweet, tangy, and the perfect finishing touch for corned beef and cabbage. It comes together quickly on the stovetop and adds incredible depth to every bite.
Ingredients
1½ tablespoons salted butter
⅓ cup brown sugar
¼ cup white sugar
¼ cup prepared yellow mustard
1 large egg
¼ teaspoon salt
⅛ teaspoon freshly ground black pepper
¾ cup cider vinegar
Method:
Melt butter in a saucepan over low heat, then remove from heat.
In a medium bowl, whisk together brown sugar, white sugar, mustard, egg, salt, and pepper.
Whisk in cider vinegar until smooth and fully combined.
Stir the mixture into the melted butter in the saucepan.
Cook over medium heat, stirring constantly, until the sauce comes to a boil.
Reduce heat and simmer for 3 minutes, continuing to stir.
Serve warm or at room temperature alongside sliced corned beef.
Tips for Success
Peel russet potatoes, but leave skins on thin-skinned varieties like red or Yukon gold if preferred.
If the beef isn’t tender after 8 hours, let it cook longer—slow cookers vary.
Always slice corned beef against the grain for the most tender texture.
This slow cooker corned beef and cabbage is classic comfort food made simple. Paired with a sweet and tangy mustard sauce, it’s a meal that feels both nostalgic and unforgettable.