Four-Way Slow Cooker Shredded Beef Recipe Type: Entree Cuisine: American Author: Prickly Gourmet Cook time: 10 hours 30 mins Total time: 10 hours 30 mins Serves: 6 servings Ingredients 1 beef Shoulder Roast, Arm Chuck Roast Boneless or Blade Chuck Roast Boneless (2 to 2-1/2 pounds) 1 tablespoon vegetable oil (optional) 1 large onion, chopped