1. Brown ground beef and onion in a large skillet.
2. Drain.
3. Combine ground beef/onion mixture and all other ingredients in 5 quart Crock-Pot.
4. Cook on low for 4-5 hours, or until heated through and cheese is melted.
5. Top soup with your favorite Taco condiments: onions, tortilla chips, sour cream, sliced jalapeños, shredded cheddar cheese, salsa, etc.