Flour, for dusting work surface
1 (8-ounce) round brie cheese, halved crosswise
1/4 cup packed light brown sugar
1/4 cup chopped toasted walnuts
1 egg, beaten with 1 tablespoon water
Pear slices, for serving
Preheat oven to 400 degrees F and line a baking sheet with parchment paper.
Unfold the puff pastry onto a lightly floured surface. Using a lightly floured rolling pin, roll the dough out slightly to smooth out any folds.
Place the bottom half of the brie…