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