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Potato-Mushroom Pie

Use a mandoline to make thin, even potato slices.

  • Servings: 12
Potato-Mushroom Pie

Photography: Gentl and Hyers

Source: Martha Stewart Living, November 2006

Ingredients

  • 2 tablespoons unsalted butter, plus more for dish
  • 1 medium onion, cut into 1/2-inch dice
  • 2 pounds assorted wild mushrooms, such as chanterelle, oyster, or black trumpet, coarsely chopped
  • 1/4 cup dry white wine, such as Sauvignon Blanc
  • 1 1/2 teaspoons coarse salt
  • Freshly ground pepper
  • 1 cup finely grated Gruyere cheese (about 4 ounces)
  • 1 cup finely grated Parmesan cheese, about 3 1/2 ounces
  • 2 pounds Yukon Gold potatoes, peeled and cut into 1/8-inch-thick rounds
  • 1 tablespoon finely chopped thyme leaves
  • 3/4 cup whole milk
  • 1/2 cup heavy cream

Directions

  1. Preheat oven to 350 degrees. Butter a 13-by-9-inch baking dish; set aside. Melt butter in a large skillet over medium heat. Add onion; cook, stirring occasionally, until softened, about 5 minutes. Add half of the mushrooms; cook until they are slightly softened. Add remaining mushrooms; cook, stirring occasionally, until mushrooms have released their juices and most of the liquid has evaporated, 8 to 10 minutes. Add wine; cook, stirring occasionally, until liquid has evaporated, 3 to 5 minutes. Remove from heat. Season with salt and pepper.

  2. Combine cheeses in a small bowl; set aside. Cover bottom of prepared dish with potato slices, slightly overlapping them. Sprinkle with half of the thyme and a pinch each of salt and pepper. Sprinkle with 1/3 of the cheese and half of the mushroom mixture. Repeat layering process, using all but 2 tablespoons cheese. Arrange remaining potato slices, slightly overlapping, around the edge of the dish. Stir together milk and cream in a bowl, and pour over top. At this point, dish can be refrigerated, covered, up to 1 day; let stand at room temperature 30 minutes before baking.

  3. Cover loosely with foil, and bake until bubbling, about 1 hour. Remove foil, and sprinkle with reserved cheese. Bake until top is golden, 20 to 30 minutes more. Transfer dish to a wire rack; let cool 10 minutes before serving.

Reviews (14)

  • AfterWorkCook 17 Dec, 2013

    Question: I am hoping to take this to a Christmas party. Can I cook it at home for the hour, and then the rest of the 30min to golden the cheese after I arrive at my holiday location (about 2hrs later)?

  • Happy_Birthday_Dr_Seuss 1 Feb, 2013

    Potato-Mushroom Pie
    Russell's Friday Dinner
    Nutritious and Delicious!

  • arabela 14 Nov, 2011

    Jidiji - I've made this two or three times, and yes, it does take the full time stated to cook. I was also sceptical about the cooking time before I'd tried it, seeing as the mandoline slices the potato so thinly, however, it really wasn't done until it had the full time. It's absolutely decicious!

  • purr1358 20 Nov, 2008

    Do you have to use Yukon Gold potatoes? Would Russet work just as well?

  • jidiji 14 Nov, 2008

    Does this recipe REALLY take 1 1/2 hrs. total to bake???? If you're slicing the potatoes on a mandoline, what is it exactly that takes 1 1/2 to cook?

  • sasscancook 13 Nov, 2008

    alibee, a mandoline is a slicer that is usually used on an angle. It is very sharp and helps to assist in getting more uniform slices versus you slicing by hand. You can find them at BB

  • alibee5 13 Nov, 2008

    What's a mandoline?

  • sewforyou 26 Jun, 2008

    This is so delicious ! If the grocery doesn't have exact mushrooms I make it with Portabellos and it's very good. It looks special and your family and friends will love the extra mile you went.

  • Regan 3 Dec, 2007

    You're right, the Gruyere cheese was accidentally omitted from the ingredients list. The error has been fixed. Thank you!

  • Gumby 21 Nov, 2007

    Potato-Mushroom Pie: I have the original recipe from Martha Stewart Living magazine and it calls for "1 cup finely grated Gruyere cheese (about 4 ounces)". Everything else is the same. I think they just left this out by mistake.

  • JoanieK101 18 Nov, 2007

    I have the same question about the cheeses. Also, I am taking this dish to my son's Thanksgiving dinner. Because of oven space, can I bake this at home and reheat it just before dinner is served? Please respond ASAP. Many thanks.

  • Alyson76 16 Nov, 2007

    I'd also be interested in tring to make this for Thanksgiving dinner, I always wanted an option other than mashed and this one does not seem too difficult. Just wondering what other cheeses would work and is there another cheese that is left out of the origional recipe?

  • kayce 16 Nov, 2007

    I second that request! I would like to fix this with my Christmas dinner and need to have that answered as well. Someone at Martha's: PLEASE ANSWER THIS!

  • BennettRLawson 14 Nov, 2007

    The ingredients call for only parmesan cheese but the instructions direct to "combine cheeses." I certainly don't want to miss out on any cheese and plan to make this for Thanksgiving this year. Any direction would be appreciated

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