Add roast, broth, onion soup mix and gravy packet on top of and around the roast
Cook in the crock pot for 5 hours on high or 6-7 on low. Meat is done when it falls apart easily or it reaches an internal temperature of at least 160*
Shred the meat 1-2 hours before serving (or cut into chunks) and finish the cooking process to help the inside of the meat get flavored
Shred completely and serve
Tip
You can add more beef broth if you feel the deer is drying out