A potato and onion gratin is a great side dish for any kind of meat and fish. This version is even tastier than a classic potato gratin. Ready within 45 minutes.
Made by Véronique
Published at 2018-03-24, this recipe is for 4 persons and takes 45 minutes.
Founder of Ohmydish (since 2014), she prefers to spend all day in the kitchen. Once working in the hospitality industry as an independent chef, she loves helping you gain confidence in the kitchen. With her easy-to-follow recipes, handy tips, and cooking knowledge, you'll make the most delicious dishes yourself! The recipes are accessible to everyone, from beginners to advanced home cooks.
Updated at: 2025-07-19
Pre-heat the oven to 180 degrees celsius or 350 degrees fahrenheit. Peel the onion and garlic clove, finely chop the garlic and divide the onion into half thin rings.
Heat a knob of butter in a skillet and sauté the onion and garlic for a few minutes. Meanwhile coat an oven dish with butter. Peel the potatoes and divide them into thin slices.
The easiest way is using a food processor or mandoline. Combine the potato slices with the onion and garlic and divide them evenly over the oven dish.
Combine the eggs and cream in a bowl and season with nutmeg, pepper and salt. Divide the mixture over the oven dish and make sure the potatoes are covered as much as possible.
Finish with a layer of grated cheese.
BAKE the gratin in the oven for about 30 minutes, or until the top is beautiful golden brown and you'll have a crusty cheese crust on top. SERVE with some meat or fish, warm veggies or salad. Enjoy!
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