I saw this beautiful snack on Smitten Kitchen and had to try it. It's so easy! It looks really fancy, but it's super simple. Very tasty and would be great to have out for a cocktail party. You can fill it with anything (cheese, chocolate, nutella...) but I tried a savory one first with tapenade. I did a mini one using just one sheet of puff pastry, but you can do a bigger one using two.
Ingredients:
1 sheet thawed puff pastry
tapenade (I made some by pureeing black olives, sundried tomatoes, capers, garlic, anchovy paste, olive oil, and red pepper flakes, but store-bought works, too!)
grated pecorino
1 egg, beaten up with some water