Two Healthy Kitchens
In a dutch oven or large soup pot, cook beef and onions over medium heat, stirring to crumble beef, until the beef is browned and the onions are softened, about 7-10 minutes.
Add all other remaining ingredients, remembering not to drain the tomatoes, beans, and corn.
Stewed tomatoes are canned in big chunks, sometimes with entire whole tomatoes. Although you can chop them with a knife on a cutting board, that tends to be messy.