In a large skillet on the stove-top, brown the hamburger with the diced onion until the hamburger is cooked and browned.
Drain off excess fat from the cooked ground beef and add the meat to a 6 quart or larger slow cooker.
Add the remaining ingredients for the soup and stir to combine. Make sure to include the liquid from all cans as this forms the soup.
Cover and cook on LOW for 6 to 8 hours or on HIGH for 3 to 4 hours.
Ladle hot soup into bowls to serve topping each bowl with your favorite toppings such as cheese, crushed tortilla chips, sour cream, green onion, etc.
Freezer Meal Instructions:
Place all ingredients into a 1 gallon size zippered freezer bag OR FoodSaver bag.
Place bag on flat surface and seal bag closed while pressing out as much excess air as possible OR use your FoodSaver sealing system to vacuum seal the bag closed.
Label bag with date prepared, name of recipe, ingredients and cooking instructions.
Lay bag flat in freezer and allow to freeze for several hours. At that point you can stand the bags upright in your freezer if desired.
To Cook Freezer Meal:
Remove freezer meal bag from freezer and place either in refrigerator overnight OR in a clean kitchen sink filled with cool water for several hours just until the freezer meal is partially thawed enough to dump the contents of the bag into the slow cooker.
Cook according to the recipe directions adding 1 additional hour cooking time (in this case 7 to 9 hours on LOW or 4 to 5 hours on HIGH from the partially thawed state ).