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Leeks au Gratin

Total Time

Prep: 35 min. Bake: 15 min. + standing


8 servings

Leeks are too delicious to stand only as an enhancement. Here, they're the star of a side dish, with a bit of French flair. —Chuck Mallory, Chicago, Illinois
Leeks au Gratin Recipe photo by Taste of Home


  • 6 medium leeks (white and pale green portion only)
  • 1-1/2 cups heavy whipping cream
  • 1 teaspoon kosher salt
  • 1/2 teaspoon pepper
  • 1/2 cup grated Pecorino Romano cheese


  1. Preheat oven to 375°. Cut off the root end and the tough leaf ends, then cut leeks lengthwise in half; cut halves crosswise into 3-in. pieces. Place cream, salt, pepper and leeks in a large cast-iron or other ovenproof skillet; bring to a boil over medium-high heat. Reduce heat; simmer, covered, 5 minutes. Uncover; simmer 15 minutes. Remove from heat; sprinkle with cheese.
  2. Bake, uncovered, until top is golden and leeks are tender, 15-20 minutes. Let stand 5-10 minutes before serving.

Test Kitchen tips
  • Leeks are part of the onion family, although their flavor is much more subtle.
  • To prepare leeks, cut off the roots and trim the tough leaf ends. Slit the leek from end to end and wash thoroughly under cold water to remove dirt trapped between the layers of leaves.
  • Nutrition Facts

    1/2 cup: 224 calories, 19g fat (12g saturated fat), 52mg cholesterol, 378mg sodium, 11g carbohydrate (4g sugars, 1g fiber), 5g protein.

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    Average Rating:
    • mizbrophy1
      Jul 17, 2020

      The recipe calls to add cheese, but there is no mention of what kind or how much of it. I don't personally mind experimenting, but it would be nice to know what the recipe intended.

    • Sarah
      Jul 13, 2019

      This recipe is rich and craveable. I prepared it for July 4th and our guests loved it and requested it for their birthday party today. This is a great recipe just as it is. Now excuse me I have to prepare another batch!

    • Mike
      Dec 20, 2018

      OMG this is absolutely delicious - just as written. Leeks are a little milder than onions and this is a very sophisticated entre when paired with this simple cream sauce. SO easy to make. I served it with baked chicken thighs (skin on and seasoned with McCormick's poultry seasoning) and it was suitable for company. Would also be great with beef. I will be putting this in my regular rotation. Awesome.

    • amehart
      May 8, 2018

      Very good and simple to make. We actually liked it better the next day as the "custard" part was a bit thicker. It's a nice and different side dish.