Cook Bacon, onion and celery until tender. Combine rice, chicken, bacon, onion, celery, spinach and salt. Combine soup and sour cream and mix into meat mixture. Spoon into 11 x 7 casserole dish. Toss bread crumbs into melted butter and sprinkle over top.

Bake at 350 for 30 – 50 minutes, until heated through.