Preheat your oven to 190°C (375°F) and line a mini muffin tin with parchment paper or spray it lightly with non-stick spray.
Gently unfold the puff pastry sheet and roll it out slightly to smooth wrinkles, then cut into 24 small squares about 2 inches wide. Keep the pastry cold to prevent sticking.
Place one pastry square into each muffin cup, gently pressing down to form a small cup shape.
Bake the pastry shells for about 8 minutes, until the edges just start to turn golden and crisp.
While the shells bake, slice the brie cheese into small pieces to make melting easier.
Remove the pastry shells from the oven and quickly spoon a teaspoon of brie into each one, pressing gently to fill the space.
Place 2-3 fresh cranberries on top of the brie in each pastry cup, distributing evenly.
Return the muffin tin to the oven and bake for another 4-6 minutes, until the cranberries soften slightly and the brie is bubbly and melted.
Remove from oven and let sit for 2 minutes. If desired, lightly beat the egg and brush it on the pastry edges for extra shine.
1 sheet pack puff pastry
Optional: drizzle with honey for a sweet finish or serve as is, allowing the tart cranberries and creamy brie to shine.
1 sheet pack puff pastry
Serve the bites warm, immediately enjoying the crispy shell, gooey cheese, and burst of tart cranberry in every bite.