1. Preheat oven to 425°. Combine 3 tablespoons oil and next 4 ingredients in a bowl. Drizzle over beets, and gently stir. Set aside.
2. Brush remaining 2 tablespoons olive oil on baguette slices. Bake 5 to 7 minutes or until golden brown.
3. Spread toasted baguette slices with goat cheese. Remove reserved beets from marinade with a slotted spoon, and arrange over goat cheese. Sprinkle with walnuts; garnish, if desired.
*If you can't find precooked beets, cut greens and ends of roots from 8 ounces fresh beets. Scrub well, wrap each in aluminum foil, and bake at 375° for 50 minutes or until tender; cool. Unwrap, peel away skin, and cube.