Preheat your oven to 400°F (200°C). Gather the vegetables, peel, and cut them into uniform chunks for even roasting.
In a large mixing bowl, toss the vegetable chunks with olive oil until evenly coated. Season with salt and pepper to taste.
Spread the coated vegetables in a single layer on a baking sheet, ensuring there’s space between pieces for proper browning.
Roast the vegetables in the preheated oven for 25–30 minutes, or until they are golden around the edges and caramelized, shaking the pan halfway through for even color.
Remove the baking sheet from the oven and immediately drizzle the sherry vinegar over the hot vegetables, tossing gently to coat and enhance their flavor.
Give everything a final toss to distribute the vinegar evenly, and serve once the vegetables have cooled slightly and glisten with a tangy, caramelized glaze.