My Sister's Taco Soup

1 lb browned ground beef
1/2 onion
10 oz can Rotel tomatoes
15 oz can corn (do not drain)
15 oz can stewed tomatoes (do not drain)
15 oz can diced tomatos (do not drain)
15 oz can kidney beans (do not drain)
15 oz can pinto beans (do not drain)
5 oz can diced chiles
1 pkg taco seasoning
1 pkg dry Hidden Valley Ranch Dressing mix


Combine in a crock pot for on low for 6 hours. Delicious when served with shredded cheese, sour cream, and scoop tortilla chips.