Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.

On a lightly floured surface, roll out the thawed puff pastry to a round shape and transfer it to the prepared baking sheet.

Place the brie in the center of the pastry, leaving a 2-inch border, then scatter blackberries and thyme over the brie and drizzle with honey.

Fold the pastry edges over the filling, creating pleats and brush the exposed pastry with beaten egg wash.

Bake for 20 to 25 minutes until the pastry is puffed and golden, and the brie is melted.

Cool for 5 to 10 minutes before serving, drizzling with more honey and garnishing with thyme.