1 c. chopped onion
3 tbsp. butter
1 sm. chicken, cooked and boned
1 can cream of chicken soup
1 can cream of mushroom soup
2/3 c. chicken broth
2 cans chilies
1 lg. pkg. Doritos
1 1/2 lbs. grated Longhorn cheese

Brown onion in butter - add soup, broth and chilies. Add chicken and mix. Butter 2 large pyrex dishes. Put layer of Doritos - layer of chicken mixture - layer of cheese on top. Bake at 250 degrees for 30 to 40 minutes.