CHEESY Chicken Tomatillo Casserole recipe! This easy Mexican dinner casserole uses 1 pound of tomatillos to make a creamy sauce that is layered with tortilla chips, chicken, black beans and cheddar cheese! I love to make this simple dish when my garden tomatillo plants give me too much and I'm left asking asking "What to do!".
Add tomatillos, onion, green pepper, jalapeno pepper, cilantro, garlic, lime juice and salt to a food process or blender. Blend until smooth and no chunks from the vegetables are left. Pour mixture into a small saucepan and bring to a boil. Cook on medium heat for 10 minutes.
Add chicken to tomatillo sauce mixture and continue cooking for 10 more minutes. If sauce is very liquidy turn up the heat. Important: you want to try to reduce all the extra liquid or it will make your casserole soggy.
Spread 1/2 of the tortilla chips in a 8x8 baking dish. Add 1/2 of your chicken tomatillo mixture on top. Add 1/2 of black beans on top. Add 1/2 of cheese on top. Repeat one more time.
Bake for 35 minutes. Allow to cool for a few minutes before serving.