So there is a pastry collection in the games section, but how do you get them? Subetalodge says Skitters gives them out during Survival, but I can't find it.

It was part of a survival plot some years ago when Fantine and Skitters fell in love with each other...

The only way to get pastries now is to buy them from other users :(

Ohh, okay. Thanks for your help!!

It's been hinted that staff may bring back a way to get pastries at some point, but yeah for now they can only be obtained from other users.