SOLVED: This apparently is a baking dish. Thrift store find for my wife. But why is there a hole in the side? What is it?
(lemmy.dbzer0.com)
Oh, and it's LARGE. That's my range it's sitting on, and it covers about 2/3 of it.
I knew the second I scrolled it into view. I miss mine. Might buy one off eBay now than you have reminded me of their existence.