Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
1         medium        onion, chopped
1 to 2    tbsp.         vegetable oil
2                       garlic cloves, minced
1         tsp.          cumin
1         tsp.          salt
3/4       tsp.          Worcestershire sauce
3         cans          beef broth
3         cans          chicken broth
8         oz. can       tomato sauce
14        oz. can       diced tomatoes
1         cup           cooked diced chicken
                        Tortilla chip strips
                        Monterey Jack or Colby Jack cheese
                        Avocado slices

Preparation:

Sauté onion in oil until translucent. Add garlic and seasonings, beef broth, chicken broth, tomato sauce and tomatoes. Bring to a boil. Cover, reduce heat and simmer for 1 hour. Add chicken. Heat through.

To serve: Place a few tortilla chips in a bowl and ladle soup over chips. Garnish with cheese and a slice or two of avocado.