01 - Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
02 - In a large bowl, combine all the cut vegetables and red onion. Drizzle with olive oil, sprinkle with salt, pepper, thyme, and rosemary; toss until evenly coated.
03 - Spread the vegetables in a single layer on the prepared baking sheet.
04 - Roast for 30 minutes, stirring once halfway through.
05 - In a small bowl, whisk together balsamic vinegar and maple syrup (or honey).
06 - After 30 minutes, drizzle the balsamic glaze over the vegetables. Toss gently to coat.
07 - Roast for an additional 10 minutes, or until vegetables are caramelized and tender.
08 - Remove from oven, transfer to a serving platter, and serve warm.