Combine first 8 ingredients in a large saucepan. Bring to a boil over medium heat, and cook 1 minute. Remove and discard cinnamon stick. Cover and chill blueberry mixture at least 1 hour.
Place Brie round on an ungreased baking sheet.
Bake at 350° for 8 to 10 minutes or until cheese is soft. Transfer to a serving plate, and top evenly with chilled blueberry topping. Serve with crackers.