Preparation Preheat oven to 325°F. Combine garlic and oil in small baking dish. Bake until garlic is tender, about 30 minutes. Drain, reserving 3 tablespoons oil. Transfer garlic to processor. Add thyme and reserved oil; puree. (Can be made 1 day ahead. Chill. Bring to room temperature before using.) Mix grapes, Port and 1 teaspoon rosemary in bowl. Let stand 15 minutes. Spread each toast slice with 1 teaspoon garlic. Spread 2 teaspoons Brie over. Top with grapes and herb sprigs.
Preparation Preheat oven to 325°F. Combine garlic and oil in small baking dish. Bake until garlic is tender, about 30 minutes. Drain, reserving 3 tablespoons oil. Transfer garlic to processor. Add thyme and reserved oil; puree. (Can be made 1 day ahead. Chill. Bring to room temperature before using.) Mix grapes, Port and 1 teaspoon rosemary in bowl. Let stand 15 minutes. Spread each toast slice with 1 teaspoon garlic. Spread 2 teaspoons Brie over. Top with grapes and herb sprigs.