Preheat the oven to 375 degrees
Grease your 9x13 baking dish
Drain rinse the black beans
Add the dry rice, black beans, corn, salsa, chicken broth, and taco seasoning to your baking dish Stir until everything is evenly combined
Cut the chicken breasts into small pieces
Push the chicken pieces down into the rice salsa mixture
Cover the casserole dish tightly with foil
Bake for 60 minutes
When your hour is up, take the dish out of the oven, test the rice with a fork to make sure it is done. If it is not, cover the dish, return it to the oven, and bake for 10-15 more minutes
When the rice is tender, sprinkle the cheese over top and return the casserole to the oven until the cheese has melted
Add the slices of green onions to the top of the dish
Top it with your choice of sour cream or greek yogurt
Serve it hot