In 2 quart pan melt butter and cook onion until light brown,add garlic chill's soup,chicken and other seasonings. Mix well.
Spray a small baking dish, I and spray light coat of non-stick cooking spray, lay uncooked tortilla in bottom add big spoonful of soup mixture then some cheese, then another layer of totilla and soup and cheese, repeat until all is gone,end your top layer with soup mixture.
bake at 400 degrees for 30-40 minutes. I add more cheese on top.