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Roasted Potatoes, Onions, and Carrots

This vibrant vegan side dish of roasted potatoes, onions, and carrots brings a rustic charm to any dining table. By slow-roasting the vegetables at a high temperature, the carrots and shallots develop a natural sweetness that perfectly complements the earthy red potatoes. The addition of red onion wedges provides a lovely depth of flavour and a touch of colour, making this a visually appealing accompaniment to a wide variety of main courses.

Ideal for a traditional Sunday roast or as a wholesome addition to a plant-based feast, these vegetables are incredibly simple to prepare. Using two baking trays ensures the vegetables have plenty of space to caramelise rather than steam, resulting in a crisp exterior and a tender middle. It is a nutritious, gluten-free option that celebrates the simple beauty of root vegetables.

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Ingredients for Roasted Potatoes, Onions, and Carrots

  • 675g small red potatoes, halved

  • 3 large red onions, cut lengthwise into 1/2-inch wedges (keep root ends intact)

  • 6 carrots, cut diagonally into 1-inch pieces

  • 8 large shallots, halved lengthwise

  • 6 tablespoons olive oil

  • Salt and freshly ground black pepper

How to make Roasted Potatoes, Onions, and Carrots

Preheat oven to 232°C with racks in upper and lower thirds. Oil 2 large rimmed baking sheets.

Toss potatoes, onions, carrots, and shallots with oil, 1 teaspoon salt, and 1/2 teaspoons pepper in a large bowl. Divide vegetable mixture between baking sheets.

Roast vegetables, stirring occasionally and switching position of sheets halfway through, until vegetables are tender and golden, about 1 hour.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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