Saute 2 medium onions in 1 stick butter.
Add 1/2 cup flour and 1 T. salt to 3 1/2 cups chicken broth. Add to onions and boil.
Add 2 cups Half & Half and 3 cups chicken and boil.
Pour on top of 1 lb. cooked noodles in a 9x13 pan.
Top with 1 1/2 cup parmesan cheese and bake @ 450 degrees for 15 minutes.