Preheat the oven to 350 degrees. Line a small light-colored rimmed baking sheet with parchment paper. NOTE: dark colored baking sheets will require less baking time.
Carefully slice off the top of the brie removing only the white rind. Place the brie on the prepared baking sheet, uncut side down. Spoon the preserves over the cut side of the brie to cover. Evenly distribute the walnuts to cover the preserves. Bake 6-10 minutes (see notes) until the cheese is warmed and soft but not melted. Remove, drizzle with the honey and serve immediately.
Notes on type of Brie used: if using triple cream Brie it will cook more quickly. Check it at 4 minutes and monitor until the cheese is soft; remove from oven.