Preheat a 12" skillet or 2 qt saucepan over medium heat. Add hamburger and brown until almost done.Add onion and continue to cook until hamburger is fully cooked and onion is translucent.Add remaining ingredients, "except cheese", stir gently to combine, cover, and bring to a boil.Reduce heat to low and simmer, covered, 15 minutes.Top with cheese, replace lid, and cook another 5 minutes. Remove from heat and serve.