01 - 
                Pat the chuck roast dry and season all over with salt and black pepper.
              
              
              
                02 - 
                Heat olive oil in a large skillet over medium-high heat. Sear the roast for 3–4 minutes per side until deeply browned.
              
              
              
                03 - 
                Cut carrots, potatoes, celery, and onion into large chunks. Layer them in the base of a slow cooker.
              
              
              
                04 - 
                Place the browned beef on top of the vegetables in the slow cooker.
              
              
              
                05 - 
                In a bowl, combine beef broth, tomato paste, Worcestershire sauce, minced garlic, dried thyme, and dried rosemary. Pour the mixture over the beef and vegetables.
              
              
              
                06 - 
                Cover and cook on low for 8–10 hours or on high for 4–5 hours, until the beef is fork-tender.
              
              
              
                07 - 
                Transfer the beef and vegetables to a serving platter. Optionally, strain and reduce the cooking liquid, or whisk in cornstarch to create a gravy. Serve warm, spooning juices or gravy over the beef and vegetables.