Preheat your oven to 400ºF (200ºC). Trim the beets, wrap tightly in foil, and roast on a lined sheet pan until pierced easily with a knife (about 1 hour). Let cool.While the beets are roasting, peel and dice the carrots.
Step 2
Sprinkle the carrots with ¼ teaspoon kosher salt and thyme leaves, and drizzle with 1 tablespoon olive oil, and roast on a lined sheet pan for about 20 minutes, or until tender.
Step 3
Unwrap foil from beets, and allow to cool. Rub the skin with a paper towel to remove. Dice the beets to roughly match the size of the carrots.
Step 4
Set your oven to broil. Add the diced vegetables to a bowl and add the vinegar, remaining 2 tablespoons olive oil, remaining ¼ teaspoon salt, and a grind or two of black pepper, and stir to combine. Set aside to marinate.
Step 5
Mix goat cheese with lemon zest, and set aside.
Step 6
Place the bread on a small lined sheet pan, and divide the goat cheese between the two slices, spreading evenly. Set under the broiler for up to a minute to warm. Spoon the marinated vegetables over the top of each slice, and serve immediately.