I used the other half of the pop tart dough today. The 2nd batch is even better than the first. I made them smaller this time. I also cut one rectangle, then put in on the top of the dough to cut the second one, for each pop tart. It made them fit together a little bit better.
I brushed a little bit of egg on top of them and sprinkled with a little bit of extra filling. It gave the dough a little bit more flavor.