01 - Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
02 - In a large bowl, combine all the prepared root vegetables and red onion.
03 - Drizzle with olive oil, sprinkle with salt, pepper, and thyme. Toss well to coat evenly.
04 - Spread the vegetables in a single layer on the prepared baking sheet.
05 - Roast for 30 minutes, stirring once halfway through, until vegetables are tender and beginning to caramelize.
06 - Meanwhile, in a small bowl, whisk together the balsamic vinegar and maple syrup (or honey).
07 - Remove the vegetables from the oven. Drizzle evenly with the balsamic glaze and toss gently to coat.
08 - Return to the oven for another 8–10 minutes, until the glaze is bubbling and vegetables are well caramelized.
09 - Serve hot, garnished with extra fresh thyme if desired.