Preheat your oven to 350°F.
Cook rice according to package directions.
Steam broccoli until slightly tender.
Mix chicken, rice, and broccoli together.
Combine soup, milk, and seasonings separately.
Pour soup mixture over chicken mixture.
Add one cup cheese to mixture.
Transfer everything to greased baking dish.
Top with remaining cheese and breadcrumbs.
Cover with foil and bake 25 minutes.
Remove foil and bake 10 more minutes.
Let cool for 5 minutes before serving.