How to Make It
Preheat oven to 425°F. Line an 8-inch square baking dish with lemongrass. Add beets and water, and cover tightly with aluminum foil. Roast until beets are tender, 35 to 40 minutes. Remove from oven, and let cool, covered, 20 minutes.
Toss beets with oil, salt, and thyme. Spread baguette slices evenly with goat cheese, and top with beet mixture.