Preheat oven to 450°F. Mix cranberry sauce, sugar, rum flavor and nutmeg.
Peel off top rind of Brie, leaving 1/4-inch edge. (Leave sides and bottom of Brie intact). Place in pie plate or ovenproof dish. Top with cranberry mixture. Sprinkle with pecans.
Bake 5 to 7 minutes or until cheese softens. Place Brie on serving plate. Serve with crackers and French bread slices.