Santa Fe Soup

This recipe comes all the way from california, by nancy hendriks. (also from mom)

1/2 lbs. ground beef
1 onino
2 c. water
1 can rotelle tomatoes (11 oz)
2 cans corn, undrained (16 oz each)
1 pkg. ranch dressing mix
2 pkg. taco seasoning (1/2 c.)
1 can white kidney beans, undrained (16 oz)
1 can pinto beans, undrained (16 oz)
1 can black beans, undrained (16 oz)
1 can cut tomatoes, undrained (16 oz)

Saute ground beef and onion. add remaining ingredients and simmer for 2 hours. serve as is or sprinkle each serving with tortilla chips, cheese, and sour cream.