Prepare the crockpot: Spray lightly with oil or cooking spray.
Add ingredients: Place chicken, enchilada sauces, beans, corn, and onions into the crockpot.
Slow cook: Cover and cook on LOW for 6–7 hours or HIGH for 3–4 hours until the chicken is tender.
Shred the chicken: Remove chicken from the pot, shred using two forks, then return it to the sauce.
Add tortillas and cheese: Stir in the tortilla strips, sprinkle cheese on top, and let it melt.
Serve and enjoy: Top with sour cream, cilantro, or sliced avocado. Serve with rice or a side salad.