In a bowl, combine red wine, beef broth, worcestershire sauce, tomato paste, dijon mustard, garlic, onion, thyme, salt and pepper.
Place chuck roast in slow cooker. Pour red wine mixture over top. Secure lid and cook for 8 hours on low.
Remove roast from slow cooker and let rest on cutting board while making the gravy. *Do not discard any of the juice
In a sauce pan over medium heat, add butter. Once melted, whisk in flour. Let cook for 2 minutes. Then add 4 cups of juices from the slow cooker, one cup at a time, whisking together each time.
Once rested, cut pot roast into slices and serve with gravy over top.
Keyword gravy, pot roast, red wine, slow cooked beef, slow cooker