Well that is just too funny! Your cat(s) are smart!

This is interesting because 2 of my 3 cats are completely not interested in people food at all. Buddy is the only one that eats people food. He has never stolen anything yet but he has put his paw in a glass of milk a couple times. He LOVES milk!

I hope your sweet babies do not end up burning themselves. I would be more worried about that than the actual stolen food.