Taco Soup

1 1/2 lb ground beef
1/2 C chopped onion
28oz can chopped tomatoes
16oz can kidney beans
15oz can corn
8oz can tomato sauce
1 pkg taco seasoning
2 C water
salt & pepper to taste
for garnish: shredded cheese, nacho chips, sour cream

Brown meat; drain. Add onion; cook until tender. Add all remaining ingredients except garnishes. Simmer 15 minutes. Serve with cheese, chips and sour cream.