Taco Soup

2 lbs. browned ground beef        

1 diced onion        

3 cans (diced) tomatoes  

1 can mild Rotel      

1 can drained corn

1 can kidney beans        
1 can pinto beans            
1 pkg. taco sesasoning
1 pkg. original ranch dressing

Cook in crock pot all day, or simmer 1 hour.  Serve with chips, cheese, sour cream.