How to Make It
Combine the thyme, caraway seeds, beef (cut in half to fit if necessary) with spice packet, carrots, cabbage, potatoes, and ½ cup water in a 5- to 6-quart slow cooker. Cook, covered, until the beef is tender, on low for 7 to 8 hours or on high for 4 to 5 hours (this will shorten total recipe time).
Transfer the beef to a cutting board and thinly slice.
Serve warm with the carrots, cabbage, potatoes, and mustard, sprinkled with fresh thyme leaves.