Prepare the Bread Bowl: Preheat your oven to 350°F (175°C). Take the large round sourdough loaf and carefully cut a circle around the top, keeping the top piece to use as a lid later. Hollow out the interior of the bread, removing enough of the soft crumb to create a bowl, and reserve the removed bread for dipping.
Assemble the Filling: Place the 8 oz wheel of brie cheese at the base of the hollowed-out bread. Evenly spread the ½ cup of cranberry sauce over the top of the cheese. Sprinkle with the 2 tbsp of chopped fresh rosemary and add the 2 tbsp of chopped pecans or walnuts if desired. For added sweetness, drizzle 1 tbsp of honey or maple syrup over the filling.
Bake the Bread Bowl: Brush the edges of the hollowed-out bread with 1 tbsp of olive oil or melted butter to enhance browning. Carefully place the prepared bread on a baking sheet and bake for 25-30 minutes. You'll know it’s done when the brie is bubbly and the bread's edges are golden brown.
Prepare for Serving: In the last 10 minutes of baking, place the reserved bread pieces on the baking sheet alongside your bread bowl to toast them lightly. This ensures you have tasty dippers ready just in time for serving.