@morning glory
I agree there are a lot of recipes for "stuffed" pancakes, but when you read them they mention putting the "filling" in the pancakes. I still say it is a filling, not a stuffing.
Fish would be in the meat/veg category thus, stuffed. (on another topic: I never understood why fish was never considered a type of meat. I mean, just because it lives in water? Makes no sense to me.)
I didn't think fish was meat - but I'm probably thinking of cookery books and super market layouts.
OED says:
Eggs can be stuffed too. I think that definitely counts as 'stuffed'.