Preheat oven to 350° F.
Remove all but one layer of skin from garlic; do not expose flesh. Arrange garlic tightly in small baking dish. Drizzle with oil. Sprinkle with salt. Cover with foil. Bake until garlic is very tender, 75 to 90 minutes.
Preheat broiler. Score a large X in top of each wheel of Brie cheese. Set each in small baking dish. Broil until browned and bubbly, 5 to 7 minutes. Serve immediately with garlic and toasted baguette slices.Servings: 8