1. Preheat oven to 350F. In small bowl, mix together butter and garlic. Set aside.
2. Slice top of bread long-ways and then cross-ways, being careful not to cut loaf all the way through. Gently open cuts of loaf.
3. Pour butter garlic mixture all over bread, making sure mixture makes it into crevices. Then cover bread with Brie cheese, pushing both deep into the cuts.
4. Move loaf to sheet pan, and bake for 20 minutes, until the cheese is melted. Serve immediately with warm cranberry sauce.