I make these all the time! Mainly because it's, "Easy, easy, easy!" As Betsy would say. I usually half the recipe (6-8), but here is the whole thing.
6 Chicken Breasts
3 cans cream of chicken soup
1 onion chopped
1 can diced green chilies
16oz sour cream
Cheddar cheese grated
1 lg package small wheat tortillas
Boil chicken, debone and shred. Mix soup, chilies, and sour cream. Warm tortillas and put small amount of sauce, onion, cheese, chicken and roll up. Place in a 9x13. Makes 2 pans with 8-10 each. Cover remaining wth sauce and lots of cheese to please :) bake at 350 for 45 minutes.