I saw a video Tinny made at MBDC (minibulldesigncult) where he baked muffins using an alcohol stove (or any stove for that matter). Basically he put an aluminum spacer on the bottom of his mug, fill water till its flush with the top of the aluminum spacer. Then put another pot on top resting on the aluminum spacer.
He proceeded to put the muffin mix in a plastic bag and placed it in. Bit of cooking time and it looked delicious!
He had a Heineken keg can pot, and a fosters pounder can pot I believe. You can find the video on Youtube.
Pappy - I saw that video too. It really did look delicious. I was going to try it out, I like your additions. I'm gonna do it