tortilla soup

Ingredients For tortilla soup

• 1 lg

  white onion,quartered
• 1-1/2 lb

  grape tomatoes,halved
• 2 clove

  garlic,chopped
• 1/2 lb

  yellow summer squash,sliced
• 8 c

  reduced sodium chicken broth, homemade if possible (use vegetable broth for vegetarian)
• 1 tsp

  adobo sauce from canned chipotles
• 1 lg

  avocado,chopped
• 1/2 c

  cilantro sprigs
• 3 to 4 md

  yellow corn tortillas (6") sliced and crisped
• 1 md

  carrot,sliced (optional)
• 1 stick

  celery ,sliced (optional)
• 1 pkg

  taco seasoning mix (optional)
• 4 oz

  shredded cheese (cook's choice)