Jewel Roasted Vegetables

• 4 medium beets 
• 3 tablespoons olive oil 
• 1 1/2 pounds carrots 
• 1 1/2 pounds Brussels sprouts 
• 8 large cloves garlic, left unpeeled 
• 1/2 teaspoon salt, plus more to taste
• 1/4 teaspoon freshly ground black pepper, plus more to taste 
• 1 tablespoon chopped fresh thyme

Preheat the oven to 375°F. 

Put the beets in a small baking dish and rub them with 1 tablespoon of the oil. Cover the dish with aluminum foil and roast for 30 minutes.
 
While the beets are roasting, peel and cut the carrots into 1-inch rounds, and trim the Brussels sprouts and cut them in half lengthwise. Put the carrots, sprouts, and garlic cloves in a large baking dish and toss with the remaining 2 tablespoons oil. Sprinkle with salt and pepper. 

After the beets have been cooking for 30 minutes, add the large pan of vegetables to the oven separately, and cook everything for 1 hour more, stirring the vegetable mixture once or twice. 

Remove the beets from the oven and transfer them to a cutting board to cool. Stir the thyme into the carrot and Brussels sprout mixture and continue to cook for another 10 minutes while the beets cool and are cut. 

When the beets are cool enough to handle, after about 5 minutes, peel, then cut them into 1-inch chunks. Remove the other vegetables from the oven, toss with the beets, season with salt and pepper, and serve.