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Butternut Squash, Apple, Leek & Potato Gratin with a Cheddar Crust

Scott Phillips

Servings: eight as a side dish.

Equally at home with the Thanksgiving turkey or sautéed pork chops, this sweet butternut-apple gratin can take a spicy turn if you slip in a bit of sliced turnip.


For the topping:

  • 1-1/2 cups coarse fresh breadcrumbs (from an airy, crusty loaf like ciabatta)
  • 2 Tbs. unsalted butter, melted
  • Kosher salt
  • 3 oz. (3/4 cup) grated sharp Cheddar
  • 1 teaspoon fresh thyme leaves

For the gratin:

  • 1/4 cup unsalted butter, plus 1/2 tsp. for the dish
  • 2 cups sliced leeks (white and light green parts of 3 medium leeks), thoroughly washed
  • Kosher salt
  • 2/3 cup plus 3 Tbs. apple cider
  • 1/2 cup plus 3 Tbs. heavy cream
  • 2 tsp. chopped fresh thyme leaves
  • Freshly ground black pepper
  • 2 crisp, firm apples, such as Golden Delicious or Braeburn (about 14 oz. total), peeled, cored, and thinly sliced
  • 12 oz. butternut squash (neck portion only) 
  • 2 medium Yukon Gold potatoes (12 oz. total)

Nutritional Information

      Nutritional Sample Size based on eight servings
      Calories (kcal) : 330
      Fat Calories (kcal): 180
      Fat (g): 20
      Saturated Fat (g): 12
      Polyunsaturated Fat (g): 1
      Monounsaturated Fat (g): 6
      Cholesterol (mg): 60
      Sodium (mg): 660
      Carbohydrates (g): 30
      Fiber (g): 4
      Protein (g): 6


Make the topping:

  • Combine the crumbs, melted butter, and a pinch of salt in a bowl. Mix in the Cheddar and thyme.

Prepare the gratin:

  • Heat the oven to 350°F. Rub a shallow 2-quart gratin dish with 1/2 tsp. of the butter.
  • Melt the 2 Tbs. butter in a small (preferably nonstick) saucepan over medium heat. Add the leeks and a big pinch of salt. Cook, stirring frequently, until well softened and lightly browned (the pan will be dry), 10 to 15 minutes. Add 2/3 cup of the cider and simmer for 2 minutes to reduce it slightly. Add 1/2 cup of the cream, the chopped thyme, a pinch of salt, a few grinds of pepper, and stir well; set aside.
  • Cook the apples: In a large nonstick skillet, melt the remaining 2 Tbs. butter over medium heat. Turn the heat to medium high, add the apple slices, and cook, gently flipping and stirring, until most of the slices are browned and limp but not falling apart, about 10 minutes. Add the remaining 3 Tbs. cream and 3 Tbs. cider. Stir and let the liquids reduce slightly for a few seconds; remove from the heat.

Assemble and bake the gratin:

  • Peel the squash neck, cut it into quarters lengthwise, and cut them across into thin slices. Peel the potatoes, cut them in half, and cut them across into thin slices. In a large bowl, combine the squash slices, the potato slices, the leek mixture, the apple mixture (scrape the pans well), and a scant 2 tsp. salt. Using a rubber spatula, mix gently but thoroughly. Scrape the mixture into the prepared gratin dish, smoothing and pressing until evenly distributee. Cover with the breadcrumb topping.
  • Bake until the crust is deep golden brown, the juices around the edges have subsided, and the crust is dark brown around the edges, about 1 hour. Let rest for 15 to 20 minutes before serving.


Rate or Review


  • User avater
    matthewtweedie | 01/15/2018

    Its awesome

  • Krispie | 11/22/2017

    This was good but not amazing. I roasted the squash ahead of time based on other reviewers and even though I only partially roasted it, the squash ended up mashed rather than sliced. I also doubled the liquid in both the leeks and the apples - that was a good move. The dish was not even close to runny but it was moist. I would consider making this again but not soon.

  • mickysingh | 11/10/2017

    Its Nice

  • jdlarsen | 02/10/2015

    I first had this as a "left over" given to me by a friend. I finally made it paying attention to the reviews that said it was dry. I added at least 1 more cup of apple cider with some cream. It wasn't dry but I thought I could even add another 1/2 cup of liquid - maybe milk. It's a very good dish. A bit of work but worth it.

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