Mushroom and Potato Frittata

  • Serves

    serves 6

A Spanish tortilla is similar to an Italian frittata. The Cooks of Sils make many different tortillas, including this classic variation, which includes mushrooms and potatoes.


  • 12 cup plus 2 tbsp. olive oil (preferably Spanish)
  • 6 cloves garlic, finely chopped
  • 1 large russet potato (about 3⁄4 lb.), peeled and thinly sliced crosswise
  • 1 medium yellow onion, thinly sliced
  • Kosher salt and freshly ground black pepper, to taste
  • 14 lb. cremini mushrooms, thickly sliced
  • 14 lb. oyster mushrooms, roughly chopped
  • 14 cup chopped flat-leaf parsley leaves
  • 6 eggs, beaten


Step 1

Heat 1⁄2 cup oil in a 10" nonstick skillet over medium heat. Add garlic, potatoes, onions, and salt and pepper; cook, stirring, until softened, 13-15 minutes. Using a slotted spoon, transfer potato mixture to a bowl, leaving oil in skillet. Increase heat to medium-high and add mushrooms and salt and pepper; cook until softened, 5-6 minutes. Transfer mushrooms to the potato mixture; let cool. Set skillet aside.

Step 2

Combine parsley, eggs, and salt and pepper in a large bowl. Add cooled onion-mushroom mixture; stir. Set aside for 10 minutes. Heat 1 tbsp. oil in reserved skillet over medium heat. Add egg mixture; cook, shaking skillet occasionally, until bottom is deep golden brown (peek carefully, using a spatula) and center is somewhat set, 6-8 minutes. Place an upside-down plate over skillet; invert tortilla onto plate. Return skillet to heat; add remaining oil. Slide tortilla into skillet, cooked side up, and cook, shaking occasionally, until deep golden brown and just cooked through, 3-4 minutes more. Slide tortilla onto a plate. Serve at room temperature, cut into wedges.

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