Instructions:
- Preheat oven to 400°F (200°C). Ensure all root vegetables are peeled and chopped to a uniform 1-inch size.
- In the large bowl, toss vegetables with olive oil, salt, and pepper until evenly coated.
- Spread vegetables in a single layer on the rimmed baking sheet. Roast for 20 minutes. Avoid crowding the pan.
- While roasting, whisk together maple syrup, thyme leaves, and apple cider vinegar in a small bowl to create the glaze.
- Remove pan from the oven. Drizzle half of the maple-thyme glaze evenly over the hot vegetables and toss gently right on the pan. Return to the oven for another 10 minutes.
- While the vegetables finish, toast the walnuts in a small skillet over medium heat for 3–4 minutes until fragrant. Set aside.
- Remove vegetables from the oven (they should be fork-tender and nicely caramelised). Drizzle with the remaining glaze and toss one final time.
- Transfer to a serving platter and immediately scatter the toasted walnuts over the top before serving piping hot.