01 - Pat the chuck roast thoroughly dry with paper towels. Generously season all sides with salt and black pepper, pressing the seasoning into the meat to ensure even flavor distribution.
02 - Heat a large skillet over medium-high heat until hot. Sear the roast on all sides until deeply browned, approximately 2–3 minutes per side. This step develops flavor through the Maillard reaction but may be skipped for convenience.
03 - Arrange the carrots, potatoes, celery, onion, and garlic in an even layer at the bottom of the slow cooker. These vegetables will create a natural roasting rack and absorb flavorful juices during cooking.
04 - Place the seared (or raw) chuck roast directly on top of the vegetable bed, ensuring the meat is not submerged. The rendered fat will season the vegetables below as the roast cooks.
05 - In a medium bowl, whisk together the beef broth, red wine, tomato paste, Worcestershire sauce, dried thyme, and dried rosemary until the tomato paste is fully dissolved and the mixture is uniform.
06 - Pour the prepared liquid mixture evenly over the roast and vegetables. Tuck the bay leaves into the liquid around the meat, ensuring they are submerged for optimal flavor infusion.
07 - Cover the slow cooker with its lid. Cook on LOW setting for 8 hours, or until the meat is fork-tender and easily pulls apart with minimal resistance. The connective tissues should be fully broken down.
08 - Carefully remove the roast and vegetables to a large serving platter using a slotted spoon or spatula. Discard the bay leaves. Allow the meat to rest for 5–10 minutes before serving for better moisture retention.
09 - For a thicker gravy, whisk the cornstarch and cold water in a small bowl until completely smooth. Stir this slurry into the hot cooking liquid, set the slow cooker to HIGH, and cook for 10–15 minutes until the sauce reaches desired consistency.
10 - Slice the rested roast against the grain or shred it with forks. Arrange the meat alongside the tender vegetables on plates. Generously spoon the thickened sauce over everything before serving.