Step 1: Prepare the Puff Pastry

1. Thaw and Preheat: If your puff pastry is frozen, let it thaw according to package instructions (usually 30 minutes at room temperature). Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
2. Roll Out the Puff Pastry: On a lightly floured surface, roll out the puff pastry sheet to smooth out any creases. You can also trim the edges to make a more even rectangle, but this is optional.
3. Score the Edges: Using a knife, score a 1/2-inch border around the edges of the pastry. Be careful not to cut all the way through. This border will allow the edges to puff up while baking, creating a raised frame for your filling.

Step 2: Arrange the Brie and Pears

1. Add Brie: Place the brie slices within the scored border on the puff pastry, slightly overlapping them to cover the base. Brie melts beautifully, adding a creamy layer that pairs well with the pears.
2. Arrange the Pears: Arrange the pear slices on top of the brie in a decorative pattern. You can overlap the slices slightly in rows or create a fan-like design. The key is to arrange them evenly for a visually appealing presentation.
3. Add Optional Ingredients: If you’re using chopped nuts, sprinkle them over the pears for extra texture. You can also drizzle a bit of honey over the pears for added sweetness.

Step 3: Brush with Egg Wash

1. Prepare Egg Wash: In a small bowl, whisk the egg until smooth. Use a pastry brush to apply the egg wash along the scored border. This will give the edges a golden, glossy finish as they bake.

Step 4: Bake the Tart

1. Bake: Place the tart in the preheated oven and bake for 20-25 minutes, or until the pastry is golden brown and puffed around the edges. The brie should be melted, and the pears tender but still holding their shape.
2. Cool Slightly: Remove the tart from the oven and let it cool for a few minutes. This will allow the brie to set slightly, making it easier to slice.

Step 5: Garnish and Serve

1. Garnish: Before serving, drizzle the tart with a bit more honey if desired, and sprinkle fresh thyme or rosemary leaves over the top for an aromatic finish. A light dusting of cracked black pepper can also add a subtle spiciness that complements the sweetness of the pears.
2. Slice and Serve: Slice the tart into squares or rectangles and serve warm. It pairs beautifully with a simple green salad or as part of a cheese platter.