In a large pan, brown ground beef with chopped onion.
Crumble and cook until no longer pink.
Drain excess grease.
Put ground beef mixture into your slow cooker.
Add in the rest of your ingredients (except hamburger buns and cheese)
Give it all a good stir.
Cover and cook on low for about 4-6 hours.
When ready to serve, toast your hamburger buns.
Place filling on buns.
Add a slice of cheese to each.
To make this on the stove top, brown ground beef and onion in a large pot. Drain excess grease and return beef mixture to pot. Stir in the rest of the ingredients (omit the flour). Bring mixture to a boil (over medium high heat) Cover, reduce heat to medium low and allow it to simmer for about 30 minutes.To Toast Buns- put a dab of butter in a cast iron skillet. Put the heat on medium. Then put in the buns and toast until golden brown.