Chicken Enchilada Casserole

This is a great make ahead meal.  Its not low in calories, but its a people pleaser for sure!

Ingredients:
6 small corn or 3 large flour tortillas
1 large onion diced
2 Tbsp. oil 30ml
4 oz.can green chilies 114ml
finely chopped
10 oz. can cream of mushroom soup 284ml
2 cups grated cheddar cheese 500ml
2 cups grated Mozzarella cheese 500ml
1 cup salsa 250ml
3-4 cups cooked chicken, cut into 1kg
large bited-sized pieces

Instructions:
Cut each tortilla into 6 pieces. Saute onion in oil. Add chilies, soup and half the grated cheeses. Cook slowly until cheese melts. Line a buttered 1 1/2 qt. casserole with half the tortilla pieces. Cover with 1/2 cup salsa. Layer with half the chicken, then half the cheese sauce. Repeat layers. Top with the remaining grated cheeses. Bake at 325f for 50 to 60 minutes. Let stand (or sit if you prefer!) For 10 minutes. Serves 6.

*from The Best of the Best Of Bridge Cookbook