Gather all your ingredients and prepare the cooked rice and shredded chicken.
In a large mixing bowl, combine the cooked rice, shredded chicken, black beans, enchilada sauce, corn, diced tomatoes, and spices. Mix well.
Transfer the mixture into a greased 9x13 inch baking dish and spread evenly. Top with shredded cheddar and Monterey Jack cheese.
Preheat the oven to 350°F. Cover the dish with aluminum foil and bake for 25 minutes. Remove the foil and bake for an additional 10-15 minutes until cheese is bubbly and golden.
Let the casserole cool for 5 minutes before serving. Garnish with fresh cilantro if desired.
Notes
This casserole can be made ahead of time and stored in the fridge or freezer.