Creamy potato gratin with caramelised onions

Creamy potato gratin with caramelised onions

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(6 ratings)

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Cooking time

Prep: 20 mins Cook: 2 hrs, 15 mins

Skill level

Easy

Servings

Serves 8

The sweetness of the caramelised onions cuts through the rich creaminess of this dauphinoise-style bake

Nutrition and extra info

Additional info

  • Freezable
Nutrition info

Nutrition per serving

kcalories
357
protein
9g
carbs
31g
fat
23g
saturates
12g
fibre
3g
sugar
4g
salt
0.29g

Ingredients

  • 2 tbsp olive oil
  • 2 onions, thinly sliced
  • 2 thyme sprigs, leaves picked, plus extra to serve
  • 150ml double cream
  • 175ml milk
  • 1¼kg/2lb 12oz large potatoes, peeled and thinly sliced
  • butter, for greasing
  • 100g crème fraîche
  • 85g parmesan, grated

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Method

  1. Up to 2 days before serving, heat oven to 200C/180C fan/gas 6. Heat the oil in a large frying pan. Add the onions and thyme, cover, and cook over a gentle heat for 10-15 mins until softened and caramelised. Pour the cream and milk into a large bowl and season well. Add the potatoes and mix to combine.
  2. Butter a 23 x 28cm ovenproof dish, then layer in half the potatoes. Spread the onion mixture on top, then layer on the remaining potatoes. Press down with your hands. Pour over the milk mixture, which should come just level with the potatoes. If not, add a little more milk until it does. Cover with foil, then bake for 11⁄2 hrs until tender. Remove from the oven and leave to cool. Cover and store in the fridge.
  3. On the day, heat the oven to 220C/200C fan/gas 7. Uncover the gratin, spread the crème fraîche on top, then sprinkle over the Parmesan. Put in the oven and cook for 30 mins until the cheese is melted, the top crisp and golden brown, and the gratin piping hot. Serve garnished with extra thyme.

Recipe from Good Food magazine, December 2011

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Comments

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lizleicester's picture
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Just used this for caramelised onions and thought a tsp of sugar would have been a good addition to the recipe...

15april92's picture
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Absolutely delicious. A big hit with my dinner guests. Easy to prepare.

rozmorgan's picture
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I made this last Christmas and I'm really glad to have run across the recipe again so I can make it this year. We served roast rib of beef and the creamy potatoes and onions went perfectly with it. I made this dish the day before and it was gorgeous.

mfletcher's picture
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Absolutely gorgeous! Highly recommended - eo easy, yet soooo tasty!

nicky30's picture
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Yum,yum,yum. This is delicious and creamy. Have made this recipe several times and it comes out perfect every time. The addition of the caramelised onions takes it to another level. I urge anyone to try it - you won't be disappointed.

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