01 -
Place the chopped celery, sliced carrots, onion, and halved baby potatoes evenly at the bottom of a 5 to 6-quart slow cooker.
02 -
Place the beef chuck roast on top of the arranged vegetables in the slow cooker.
03 -
In a bowl, combine the Catalina dressing and dry onion soup mix until evenly blended.
04 -
Pour the dressing mixture evenly over the beef and vegetables in the slow cooker.
05 -
Cover and cook on the low setting for 8 hours without removing the lid to ensure tender results.
06 -
Remove the beef from the slow cooker, shred it discarding any excess fat, then return to the slow cooker and serve with the vegetables and sauce.