Slow Cooker Mustard Beef Brisket

Slow Cooker Mustard Beef Brisket

Even smoked-brisket die hards find room on their plates for this easy to make, tender, and flavorful brisket. Especially when paired with the right sides!
Prep Time 15 minutes
Cook Time 8 hours
Total Time 8 hours 15 minutes
Servings 8 people


  • 4 lb beef brisket
  • 1 onion, roughly chopped
  • 2 ribs celery, chopped into 2 or 3 inch long pieces
  • 4 cloves garlic, smashed
  • 1 tbs whole black peppercorns
  • 1 bay leaf
  • 1 cup beef broth
  • 1/2 cup mustard
  • 1 tbs Worcestershire sauce
  • 2 tbs olive oil
  • 2 tsp lemon juice
  • 2 tbs honey
  • 1 tbs cayenne
  • Salt and pepper, to taste


  • Pat brisket dry, then rub with salt and pepper. Sear in a large skillet heated to medium-high for 4 to 5 minutes, just to brown the outside edges.
  • Place the coarsely chopped onion, celery, and garlic in the bottom of the slow cooker. Add the whole peppercorns, bay leaf, and beef broth.
  • Whisk together mustard, Worcestershire sauce, olive oil, lemon juice, honey, and cayenne.
  • Rub the mustard mix onto the brisket, then place in the slow cooker on top of the vegetables. Cover and cook on low for 8 to 10 hours, or until the brisket is tender.
  • Remove from slow cooker and let rest at least 20 minutes. Strain the liquid and reserve, keeping warm until ready to eat. Be sure to slice against the grain to get maximum tenderness.