Absolutely a kid pleaser, uses up that leftover rice and just maybe a good alternative to mac n cheese. Adding herbs is, also, an option...oohhhh, maybe a little sweet pepper, or how about...
Combine rice, sour cream, salt, pepper, and 1/2 the cheese. Spoon into a buttered, shallow 1-quart baking dish. Top with remaining cheese. Bake at 350 degrees for about 20 minutes.