1. Bake 4 boneless skinless chicken Breast In Over at 400 Till done about 1 hour. Let cool. Spray a Pan with some Pam. 2. Cook dice onions in a pan. While their cooking rip chicken into little peaces. Cook till the onions are soft and the chicken has some color. Add Enchilada Sauce. I used half of a 19oz can. Cook until most of the liquid is gone. It should look like chicken mash. Use as filling.