I've heard of cases of "sleep-eating", and of course sleep walking. The "sleep-cooking" sounds potentially dangerous!
I've only sleep walked when I took the sleeping pill Ambien (zolpidem) several years ago. I didn't like that side effect at all!
Have you seen a doctor for this, Kelly? You can get a sleep study done where you stay overnight at a sleep center and you are monitored and your brain waves are checked.