Preheat your oven to 375°F (190°C) to ensure it’s ready for baking the bites.
On a lightly floured surface, gently roll out the puff pastry sheet until it is about 1/8 inch thick. Cut the pastry into 2-inch squares, aiming for about 12-16 squares total.
Arrange the squares on a baking sheet lined with parchment paper to prevent sticking.
In the middle of each pastry square, place a small cube of Brie cheese, allowing it to melt nicely while baking.
Top each piece of Brie with a teaspoon of cranberry sauce, followed by a sprinkle of the chopped pecans or walnuts for added crunch and flavor.
Season each bite with a pinch of salt and freshly ground black pepper and add the finely chopped rosemary for a burst of herbal aroma.
If desired, gently fold the corners of the pastry squares over the filling to create charming bundles; alternatively, leave them open for a rustic presentation.
To achieve a beautiful golden color, brush the tops of each pastry bite with the beaten egg, ensuring even coverage.
Bake in the preheated oven for 15-20 minutes, or until the pastry is puffed up and exhibits a lovely golden-brown hue.
Once baked, remove the bites from the oven and allow them to cool for 5 minutes before serving to let the flavors meld.
Notes
Serve on a rustic wooden board or festive platter, garnished with fresh rosemary sprigs.