- Heat the oven to 350 degrees F. Lightly grease a 13x9x2-inch baking dish. Stir the chicken, soup, sour cream, tomatoes and green chiles, beans and seasoning mix in a large bowl.
- Layer half the chicken mixture, 3 cups tortilla chips and half the cheese in the baking dish. Layer with the remaining chicken mixture and tortilla chips. Cover the baking dish.
- Bake for 30 minutes. Uncover the baking dish. Sprinkle with the remaining cheese.
- Bake, uncovered, for 10 minutes or until hot and bubbling and the cheese is melted. Sprinkle with the chopped tomato, green onion and cilantro before serving, if desired.