Yukon Gold and Sweet Potato Gratin
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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This Yukon Gold and sweet potato gratin is a beautifully balanced vegetarian side dish that offers a sophisticated twist on the classic dauphinois. By combining earthy, buttery Yukon Gold potatoes with naturally sweet red-skinned sweet potatoes, you create a vibrant contrast in both colour and flavour. Infused with fresh thyme, garlic, and a hint of warming nutmeg, the vegetables are simmered in milk before being finished with a rich cream topping for a truly indulgent texture.
Perfect for a Sunday roast or as a centrepiece for a festive dinner, this homemade gratin is remarkably simple to prepare. The dual-cooking method ensures the potatoes are perfectly tender inside while achieving a golden, bubbling crust on top. Serve it alongside roasted greens or a crisp salad for a comforting, seasonal meal that will please the whole family.
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Ingredients for Yukon Gold and Sweet Potato Gratin
90ml (3/4 stick) butter, room temperature, divided
1.0kg Yukon Gold potatoes, rinsed
675g red-skinned sweet potatoes (yams), peeled
475ml whole milk
1 garlic clove, pressed
1 tablespoon kosher salt
2 teaspoons fresh thyme leaves
1 teaspoon ground black pepper
1/8 teaspoons ground nutmeg
240ml whipping cream
How to make Yukon Gold and Sweet Potato Gratin
Preheat oven to 204°C. Coat 13x9x2-inch glass baking dish with 2 tablespoons butter. Thinly slice all potatoes; place in prepared dish. Bring milk and next 5 ingredients to boil in medium saucepan; pour over potatoes. Dot with 2 tablespoons butter. Cover with foil. Bake until potatoes are tender and milk is almost absorbed, about 50 minutes.
Bring cream to boil in saucepan. Uncover potatoes, pour cream over, and dot with 2 tablespoons butter. Bake uncovered until top is golden brown in spots, about 25 minutes. Cool slightly.
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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.
Historique de l'article
Les informations contenues dans cette page ont été évaluées par des cliniciens qualifiés.
17 janvier 2026 | Publié à l'origine
Auteur: :
UK recipe editors
Examiné par des pairs
UK recipe editors

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