Preheat oven to 375°F (190°C) and lightly grease a 24-cup mini muffin tin.
Sauté the diced pancetta in a small skillet over medium heat until crispy, about 5-7 minutes, then drain on paper towels.
On a lightly floured surface, roll out the puff pastry sheet and cut it into 24 equal squares.
Place each pastry square into a muffin cup, pressing down gently to form a well.
Place one cube of Brie cheese into each pastry cup.
Top each cube of cheese with approximately one teaspoon of cranberry sauce.
Distribute the crispy pancetta evenly over the cranberry sauce.
Bake for 12 to 15 minutes or until the pastry is golden brown and the cheese is melted.
Remove from the oven and immediately garnish with fresh thyme leaves and a drizzle of honey.
Allow to cool for 5 minutes in the pan before serving.