Mix the shredded chicken, black beans, corn, green pepper, and barbecue sauce until combined.
Pour mixture into a large casserole dish and top with cheddar cheese.
Place the dish in the oven loosely covered with foil and bake at 375˚F for 25 minutes.
Remove the foil and top with french fried onions and continue to cook for 10 more minutes or until the sides are bubbling and the onions are browned.
Let rest for 5 minutes, then garnish with cilantro. Enjoy!
