Pre-heat oven to 400°F.
Bring one puff pastry sheet to refrigerator to defrost for 2-3 hours.
Cut puff pastry sheet into 16 equal-sized squares.
Place puff pastry squares a few inches apart from each other onto baking sheet lined with parchment paper. Grease baking sheet if you are not using parchment paper.
Beat up one egg, and brush egg wash on the surface of each puff pastry square.
Bake for 10-12 minutes, or until the top of the squares turn slightly golden brown. Remove from oven.
Thinly slice 16 slices of brie and place a slice of brie on each square. Bake in the oven for 3 minutes, or until brie melts. Remove from oven.
Place sliced nectarine and a couple of blueberries on each square.
Drizzle honey onto each square.
Serve warm and enjoy!