Preheat the Oven: Start by preheating your oven to 375°F (190°C). This will ensure your bites cook evenly.

Prepare the Puff Pastry: Roll out the puff pastry on a lightly floured surface to ensure it doesn't stick. Cut the pastry into 24 small squares.

Place the Pastry in the Muffin Tin: Lightly grease a mini muffin tin with cooking spray or line it with parchment paper. Place each puff pastry square into the muffin tin, pressing gently to form little cups.

Add the Brie: Place a small cube of Brie cheese into each puff pastry cup.

Add the Cranberry Sauce: Spoon about half a teaspoon of cranberry sauce over the Brie in each cup.

Bake: Place the muffin tin in the preheated oven and bake for about 15 minutes or until the pastry is golden and the cheese is melted and bubbly.

Garnish and Serve: Remove the bites from the oven and garnish with fresh rosemary or thyme if you like. Serve warm for the best taste experience.