Follow these steps to create your delicious Baked Brie with Cranberries and Walnuts:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Brie: Place the round Brie cheese on a baking sheet lined with parchment paper.
3. Mix the Topping: In a small bowl, combine the cranberry sauce, chopped walnuts, brown sugar, vanilla extract, and fresh rosemary (if using).
4. Top the Cheese: Spoon the cranberry mixture generously over the top of the Brie, ensuring it’s evenly covered.
5. Bake: Place the baking sheet in the preheated oven and bake for 15-20 minutes, or until the cheese is soft and melty.
6. Remove from Oven: Carefully take the baking sheet out of the oven. Let it cool for a few minutes.
7. Serve: Transfer the warm Baked Brie onto a serving platter. Surround it with baguette slices or crackers for easy access.

These straightforward steps will lead you to the perfect Baked Brie with Cranberries and Walnuts, ready to impress!