Quick and easy.
1 can cream of mushroom soup
1 can cream of celery soup
1 onion, chopped
3 boneless chicken breasts, diced
1 can chopped tomatoes (or use fresh tomatoes)
1 small can green chiles (or fresh)
1 small can olives
4 or more corn tortillas, cut into strips
8-16 ounces grated mozzarella or cheddar cheese
1 cup salsa
Mix up all the liquid and small stuff in a glass 9x13" casserole dish, then mix in the tortillas and chicken. Top with cheese. 350F for one hour.