While sitting in my room waiting for my cocoa bricks (dense brownies) to finish I smelled smoke.  This is normally a bad thing and dashed down to see the kitchen filling with smoke from the oven and I quickly turned off the oven, grabbed the brownies and threw them on the cooling grate expecting a charred and burning mass.  Instead I saw that there was a large sticker on the bottom of pan I’d failed to remove that was now reduced to gooey ash.  On the plus side, the brownies are quite good.