preheat oven to 350

boil chicken once done let stand in water for at least 5 min. before cooling

while chicken is boiling chop onion and shred cheese and set aside

after chicken is cooled enough to handle shred and set aside

put chile in pot (if frozen thaw) and add cream of mushroom, garlic salt, milk and cream cheese bring to a boil reduce heat add chicken and let simmer for 10 min stiring occasionally(sauce should not be to thick)

while chile is simmering heat some cooking oil in small frying pan and fry each corn tortilla for 5-10 sec on each side place on paper towel to drain

in a 9x13 casserole dish put a layer of corn tortillas top wit layer of chile, onion and cheese repeat (will make 4 layers) once last layer is done cover wit cheese put in oven for 10 min just to melt cheese.