Spray a dish (1- 9x13 inch baking dish or 2- 8x8 inch baking dishes or disposable pan(s)) with cooking spray.
Cook rice and chicken and shred chicken (see note for cooking chicken)*
Drain black beans
In a bowl combine shredded chicken, enchilada sauce, tomatoes, black beans, sour cream, and seasonings
Put rice at the bottom of the prepared baking dish, spoon chicken mixture on top of rice. Sprinkle the cheese on top.
Freeze or bake, cooking instructions below.
For baking from frozen, remove from freezer and bake at 350 degrees for 1 1/2 hours or until cheese is melted and center of the dish is warm.
For baking right after prepared - bake at 350 for 30-35 minutes, until cheese is melted and starting to turn golden brown on top.