01 - Preheat your oven to 425°F.
02 - In a large mixing bowl, combine the prepared carrots, parsnips, sweet potato, rutabaga (or turnip), and red onion.
03 - Drizzle the vegetables with olive oil, then season generously with sea salt, freshly ground black pepper, fresh thyme leaves, fresh rosemary, and minced garlic. Toss thoroughly to ensure even coating.
04 - Arrange the seasoned vegetables in a single layer on a large baking sheet, preferably lined with parchment paper for easier cleanup.
05 - Roast in the preheated oven for 35 to 40 minutes, turning them once halfway through the cooking time, until they are golden brown, tender, and exhibit caramelized edges.
06 - Carefully remove the baking sheet from the oven. If desired, drizzle the roasted vegetables with balsamic vinegar and toss gently to distribute.
07 - Transfer the roasted root vegetables to a serving platter. Garnish with fresh parsley before serving hot.