1. 1 Cook ground beef and onion in medium saucepan over medium heat until meat is browned and onion is tender. Drain.
2. 2 Mix in water, tomatoes, kidney beans, tomato sauce and taco seasoning. Bring to a boil.
3. 3 Cover, reduce heat, and simmer for 30 minutes.
4. 4 Serve topped with cheese, yogurt and avocado slices if desired.
