Taco Soup

1 lb ground beef, browned and drained
1 (28 ounce) can crushed tomatoes
1 can corn, undrained
1 can black beans, undrained
1 can kidney beans, undrained
1 envelope ranch dressing mix
1 envelope taco seasoning
1 small onion

1. Combine all ingredients in slow cooker.
2. Cover.
3. Cook on low 4 to 6 hours.
4. Garnish individual servings with tortilla or corn chips, cheese and sour cream.