Steam broccoli until crisp tender. Prepare stuffing according to box directions. Combine chicken, soup, and Sriracha sauce in a large bowl. Gentle combine with stuffing and broccoli. Pour into a greased 9” x 13” pan and bake at 350 degrees for 30 minutes.
Casserole can be prepared a day or so ahead of time when covered and refrigerated. Bake at 350 degrees for 30 minutes; remove cover and bake an additional 15 minutes, or until edges are browned.