01 - Pat the chuck roast dry with paper towels and season all sides with salt and pepper.
02 - Heat a little oil in a large skillet over medium-high heat and sear the roast on all sides until browned, about 3-4 minutes per side.
03 - Place the carrots, potatoes, onion, and garlic in the bottom of the slow cooker.
04 - Lay the seared roast on top of the vegetables in the slow cooker.
05 - In a bowl, whisk together beef broth, tomato paste, Worcestershire sauce, dry red wine (if using), dried thyme, and dried rosemary; pour over the roast and vegetables. Add bay leaves.
06 - Cover and cook on the low setting for 8 hours, until the beef is tender and shreds easily with a fork.
07 - Remove bay leaves. Transfer roast and vegetables to a platter. Optionally skim fat from juices and serve as is, or reduce juices in a saucepan over medium heat for a thicker gravy. Garnish with chopped parsley before serving.