I have a cake request with a flan filling request. I know what flan is but never heard of it being used as a filling. I would think that as a filling, it would not be stable enough to stack layers. Can someone help me, pls?

If you look up curd or pudding filling you might find some tips.  Never used it myself though. Guess you would need to make a homemade version of it in order to be a bit thicker than normal...

I tried googling it but I found nothing usable. I was planning on making it myself if I can figure it out. To me it looks more like a custard. Thank you, Julia

It's a traditional Dutch pudding. Normally quite liquid. That's why my thought was to make it at home, adding maybe some cornstarch or egg yolk to thicken it up. 

Sorry. Spanish of course.  

I would use pastry cream as a filling, adding a dam of buttercream on the perimeter of the cake layer before adding the filling. As far as I know, flan is a baked custard, you can't really put it inside the cake, but pastry cream should be fairly similar in taste and texture.

Thanks, ladies