score:3
I decided to give it a try (worst case scenario I would have pastries for breakfast before passing through security). It was no problem to take them through security. I placed the bakery box separately to be scanned and no one so much as batted an eye at it.
Upvote:4
The restrictions for carry-on are usually phrased like this:
The current restrictions for liquids, aerosols and gels from ICAO and in effect in most countries are that they must be in containers 100ml or equivalent, placed in a transparent resealable plastic bag with max capacity 1-litre. (As found on the International Air Transport Association website)
Although a cream stuffing is definitely not a liquid, with a bit of imagination (or maybe even technically) it can be called a gel.
But I don't think that any security officer would consider cakes and pastries as "containers" that may have a carrying capacity exceeding that 100 ml limit.