01 - Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
02 - In a large mixing bowl, combine carrots, parsnips, sweet potato, rutabaga or turnip, and red onion.
03 - Drizzle olive oil over the vegetables and add thyme, minced garlic, sea salt, and black pepper. Toss until evenly coated.
04 - Spread the vegetable mixture in a single layer on the prepared baking sheet.
05 - Roast for 35 to 40 minutes, stirring once halfway through, until vegetables are golden and tender.
06 - Serve hot, optionally garnished with extra fresh thyme.