One of the simplest and most rewarding clay pieces I make is a lace imprint casserole dish. This particular piece is eventually headed to my brother.   Steps to creating a lace imprint casserole dish:   I took a Pyrex style glass casserole dish and created a plaster mold from it. Be prepared that due to shrinking in the kiln, the piece you end up creating from a plaster mold will be smaller than the original piece it is cast…