Remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden brown.
Let the casserole cool for a few minutes before slicing. Garnish with chopped cilantro if desired.
Variations & Tips
For a milder version, use mild green chiles and omit the onions if your family prefers. You can also add a can of black beans or corn to the chicken mixture for extra texture and flavor. If you have leftover turkey, it works wonderfully in place of chicken, especially around the holidays. For a gluten-free option, ensure your corn tortillas are certified gluten-free.