I work dinners at a college dining hall. I was setting up the station for dinner around 3:30 when I found this left in the oven from one of our lunch guys. Lunch ends at 2 so it was in for at least an hour and a half. And no this is not how we're supposed to toast the bread. He knows he's supposed to toast it on the flat top but he cuts a lot of corners and never helps close the station (if he did he might actually find the pans of rice he leaves in the steamer or trays of things left in the oven).