Gratin of Potatoes and Leeks

Some time ago I made potatoes dauphinoise for the first time and instantly fell in love with the dish. It is filled with garlic goodness and it so easy to make. So when I found this recipe, that is essentially potatoes dauphinoise with added leek goodness, I just had to try it out… And as I imagined, it is wonderful, and really easy to make.

A word of warning before we begin…

If you have never worked with leeks before though and want to give this recipe a whirl over the weekend, I must advise you to watch this informative video, or you may find your delicious dish turns into a muddy mess.


  • Preparation time: 15 mins
  • Cooking time: 1 hour, 5 minutes


  • 50g butter, plus extra for greasing
  • 300g (about 2) leeks, thinly sliced
  • 3 cloves of garlic, finely crushed
  • 4 sprigs of fresh thyme, leaves picked and chopped
  • 1 kg potatoes, sliced 0.5cm thick
  • 350 ml single cream


  1. Preheat the oven to 180°C/GM4
  2. Melt the butter in a pan, then add the leeks, garlic and most of the thyme. Cover the pan with a disc of grease-proof paper cut to the size of the pan. Cook over a low heat for 5 minutes until just soft.
  3. Meanwhile, cook the potatoes in a pot of boiling water for 3 minutes then drain.
  4. Lightly butter a large gratin dish, then add a layer of overlapping potato slices.
  5. Season the potatoes, then add the leeks and all the juices. Add the final layer of potatoes and season again.
  6. Pour over the cream and bake in the oven for 15-60 minutes.
  7. Serve scattered with the remaining thyme.

4 thoughts on “Gratin of Potatoes and Leeks

  1. Yum. I have some leeks in the fridge and was wondering what I might do with them. Reminds me that I used to make a leek pie with a cheesy mashed potato topping which was also delicious. Now which will it be – my recipe or yours?!
    ‘Meanderings through my Cookbook’

    1. HopeEternal, thanks for dropping by. Your blog looks delicious and has been added to my Blogroll…. now where is that recipe for leek pie???

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