Ingredients
Method
- Heat oven to 425°F; set out two rimmed sheets. Pat vegetables dry for oil to coat.
- Whisk oil, mustard, salt, pepper, and thyme in large bowl. Thoroughly toss with carrots, parsnips, and turnips.
- Divide between sheets in loose single layers; roast 20 minutes without piling.
- Turn vegetables; swap sheets between racks. Roast 15 to 20 minutes more until browned and easily pierced.
- Transfer to warm dish; serve promptly. Do not tightly cover: steam softens browned edges.