Preheat oven to 375°F (190°C).
Unfold the puff pastry sheet on a lightly floured surface. Cut into 2-inch squares.
Place the puff pastry squares on a baking sheet lined with parchment paper.
Dock each square with a fork.
Top each square with a small amount of brie and cranberry sauce.
Brush the edges of the puff pastry with egg wash.
Optional: Sprinkle with chopped pecans, fresh rosemary, or flaky sea salt.
Bake for 15-20 minutes, or until the puff pastry is golden brown and the brie is melted and bubbly.
Let cool slightly before serving.