I just got mine and played with it last week, I was in a cranky mood (kitchen remodel), and tossed it to the wife and said I like mushroom and Swiss in mine, AND WALKED AWAY.
Well she made 5, 3 were stuffed with that cubed mixed cheese pack that you get from Sams for parties, and 2 were stuffed with Mushroom and swizz.
I grilled them up and forget about them because my BIL came over and we were going over the electric in the kitchen, anyhow I ran out and flipped yes one side was pretty charred.
I apologized to my family for charring the burgers but they chowed down and loved them, here they like they're burgers charred
and since the Stufz Burgers are pretty thick it doesn't destroy the burger.
They were really good, better than I thought and not as thick as I thought they would be.
I probably won't use it for everyday burgers but will use it often...especially to impress company.
That would of made an interesting Video!