Sear the meat: Heat the vegetable oil in a skillet over medium-high heat. Season the chuck roast generously with salt and pepper. Sear the roast on all sides until browned, about 3-4 minutes per side.
Prepare the vegetables: Place the chopped carrots, potatoes, onion, and minced garlic in the bottom of the slow cooker.
Add the roast: Transfer the seared chuck roast to the slow cooker, placing it on top of the vegetables.
Mix the liquid: In a bowl, combine beef broth, red wine (if using), and Worcestershire sauce. Pour the mixture over the roast and vegetables. Add the thyme and rosemary sprigs.
Set the cooker: Cover the slow cooker with its lid. Set to cook on low for about 480 minutes or on high for 240 minutes.
Check for doneness: The pot roast is done when it’s fork-tender and the vegetables are soft. Remove everything from the slow cooker and let the roast rest for a few minutes before slicing.
Notes
Ensure to sear the meat for better flavor and check for tenderness throughout cooking.