It's a miniature convention oven. There are foods you can cook in a pan but also foods you can't and must cook in an oven, like pies. It's best useful for individuals that don't want to waste the time nor energy heating up their large oven just to make an individual portion, at least in my case.
I wish this was mentioned more often. Air fryers are tiny compared to ovens. In my case where I typically cook a meal for two days for a family of four an air fryer is utterly useless.
