01 -
Season the chuck roast generously with salt and black pepper on all sides. Heat olive oil in a large skillet over medium-high heat and sear the roast for 3–4 minutes on each side until deeply browned.
02 -
Transfer the seared roast to the bottom of your slow cooker. Scatter the sliced onions, garlic, carrots, and potatoes around the beef.
03 -
In a medium bowl, whisk together the beef broth, Worcestershire sauce, thyme, rosemary, and bay leaves. Pour the mixture into the slow cooker.
04 -
Cover and cook on low for 8 hours, or until the roast is fork-tender and the vegetables are soft but not mushy. Alternatively, cook on high for 4–5 hours for faster results.
05 -
Remove the meat and vegetables from the slow cooker. For gravy, whisk cornstarch and cold water together in a small bowl. Stir the slurry into the remaining liquid in the slow cooker, turn the heat to high, and simmer until thickened.
06 -
Pour the gravy over the meat and vegetables before serving.