Chicken Enchilada Casserole

1 big can chicken or 2 cups fresh, cooked chicken

1 can cream of mushroom

1 can cream of chicken 

1 small can chilies 

1 cup sour cream or milk

Onions

Cheese-1 cup for mixture plus more for layering 

2 dozen corn tortillas 

Stir together all except for tortillas (if too thick add milk)

Layer in 9x13 pan with tortillas and cheese. 

Top with cheese 

Bake at 350 for 45 minutes uncovered.