Fry corn tortillas in hot oil 1 at a time just until soft. Drain; tear into quarters.
Combine in a saucepan soup, milk, onion, green chilies, salt, pepper, and garlic. Let simmer for 10 minutes.
In a 9"x13" or 10"x15" pan, spray non-stick spray, then spread a little of the sauce on the bottom of the pan so tortillas don't stick.
Spread a layer of corn tortillas over the bottom, then chicken, then soup mixture, then cheese. Then start over again with the tortillas and continue layering. Sprinkle cheese over the top.
Bake in 350°F oven for 25 minutes. Then let stand for 10 to 15 minutes before serving.
Submitted by: Elisa