Mexican Casserole with salsa

1 doz corn tortillas 6 inch size 1 med onion minced 2 c. tomatoes diced 2 c. salsa made with tomatoes     grnd cumin 1 whl red chiles minced or possibly- 1[...]

1 1/2 cups crushed tortilla chips 1 lb shredded cooked chicken (I go the easy route and get a rotisserie chicken from Sam's or Costco) 2 (15 1/2 ounce) cans[...]