Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
Lightly dust a clean surface with flour and unfold the puff pastry sheet. Roll it out gently to smooth any creases.
Use a knife to cut the puff pastry sheet into 6 equal strips, about 3 inches wide.
On each pastry strip, layer the thin slices of pear and brie cheese, slightly overlapping them, leaving a small edge at the bottom of the strip.
Fold up the bottom edge of the puff pastry strip to cover the bottom of the filling, then carefully roll the pastry up to create a rose shape. Place each rose seam-side down on the prepared baking sheet.
In a small saucepan, combine honey and thyme. Warm gently over low heat for 1-2 minutes to infuse the flavor, stirring occasionally.
Beat the egg in a small bowl and brush the egg wash over the tops of the pastry roses.
Bake in the preheated oven for 20-25 minutes until the pastry is golden and puffed.
Once done, remove from the oven and drizzle the honeyed thyme glaze over the warm roses.