These were super!! I too used just some frozen raspberries I had from summer, along with a few chocolate waffers. I also hate to waste egg yolk, so I just beat the whole egg and used it as the egg wash. Turned out really well and were such a super treat, very easy and quick. I didn't freeze it either but could definately see how making them ahead so you can just pull it out when you need to would benefit. Sprinkle with icing sugar after.
These were pretty darn good. I was looking for something quick and easy to do with scraps of puff pastry I had left over. I used chocolate chips and frozen raspberries (which was what I had on hand) and didn't bother freezing my pastries before baking, because I didn't have time. After cooling slightly, I topped each pastry with a dollop of Cool Whip before serving. DH was very impressed!