The combination of flavors really spice up this great (and easy!) beef dish.
2 1/2 pound beef brisket (cut off visible fat)
1 (18 ounce) bottle hickory smoke flavor barbecue sauce
1 tablespoon prepared horseradish
2 teaspoons spicy prepared mustard
Place brisket in bottom of slow cooker. Mix remaining ingredients together and pour over brisket. Cover and cook on low for 8 hours.