I'm not going to repost the whole recipe, I'll just give you the link, but I will share a couple of helpful tips.
I found it helpful to have a counter to sit at and a show to Hulu on the computer next to me while I hollowed out all those tomatoes. I just sliced the tops off the tomatoes and then used the 1/4 teaspoon method she suggests. There was a bit of a learning curve so expect to sacrifice a couple of tomatoes in the beginning.
Unfold the puff pastry before it is totally thawed because it's a bear to separate once it's at room temp.
K, that's about it. Have fun!