Add all ingredients including the raw ground beef into a gallon freezer bag. Separate the beef a little by squishing it with your fingers in the sealed bag. Make sure to get as much air out as possible.
Label bag; freeze.
Thaw out in refrigerator overnight; add contents to slow cooker the next morning.
Add 1/4 cup water and cook approximately 6-8 hours on low. *Cook times will vary greatly depending on your slow cooker.
You may need to add more water towards the end of the cooking process for desired consistency.
Spoon mixture into hamburger buns and serve with sweet potato fries (optional).