01 - Preheat oven to 425°F and line a large baking sheet with parchment paper.
02 - Place carrots, parsnips, sweet potato, and rutabaga in a large mixing bowl.
03 - In a small bowl, whisk together olive oil, maple syrup, balsamic vinegar, thyme, salt, and pepper until well blended.
04 - Pour the maple-oil mixture over the vegetables and toss to ensure even coating.
05 - Spread the coated vegetables in a single layer on the prepared baking sheet.
06 - Roast for 35 to 40 minutes, stirring once halfway through, until vegetables are golden brown and tender.
07 - Serve hot, garnished with additional fresh thyme if desired.