01 - Preheat the oven to 425°F and line a large baking sheet with parchment paper.
02 - Place carrots, parsnips, sweet potato, red onion, and beet (if using) into a large mixing bowl.
03 - Drizzle olive oil over the vegetables, then sprinkle with sea salt, black pepper, thyme, and rosemary. Toss thoroughly to coat evenly.
04 - Spread the seasoned vegetables in a single layer on the prepared baking sheet.
05 - Roast the vegetables for 30 minutes, stirring halfway through to ensure even browning.
06 - While the vegetables roast, combine balsamic vinegar and maple syrup in a small saucepan. Simmer over low heat for 3 to 4 minutes until slightly thickened.
07 - Remove the vegetables from the oven after 30 minutes, drizzle the balsamic glaze over them, and toss gently to coat.
08 - Return the glazed vegetables to the oven and roast for an additional 10 minutes until caramelized and tender.
09 - Serve the roasted vegetables warm, optionally garnished with fresh herbs.