Ingredients

  • 1 1/2 cups all-purpose flour
  • 1/2 teaspoon salt
  • 3 tablespoons cold unsalted butter, cut into small pieces
  • 1/2 cup mascarpone cheese
  • 1 1/2 tablespoons lemon juice
  • 3 tablespoons ice water
  • 4 tablespoons olive oil
  • 2 ounces diced pancetta
  • 2 shallots, minced
  • 1 pound assorted mushrooms, such as cremini, shiitake, and button
  • 1 tablespoon chopped fresh thyme
  • 1/2 teaspoon salt
  • 1/4 teaspoon freshly ground black pepper
  • 1/3 cup (1 ounce) grated smoked mozzarella cheese
  • 1/3 cup (1 ounce) grated fontina cheese
  • 2 tablespoons freshly grated Parmesan cheese
  • 1 large egg, lightly beaten

Method

  • In a food processor combine the flour and salt, and pulse to combine.
  • Add the butter and pulse until the butter is finely chopped and the mixture resembles coarse meal.
  • Add the mascarpone and lemon juice and pulse a few times.
  • Add the ice water and run the machine just until the mixture is moist and crumbly, but do not form a ball.
  • Turn the dough out onto a sheet of plastic wrap and press into a disk.
  • Wrap the dough tightly and refrigerate for 20 minutes.
  • Heat 2 tablespoons of the olive oil in a large saute pan over medium-high heat.
  • Add the pancetta and cook until crisp and golden, about 4 minutes.
  • Using a slotted spoon, transfer the cooked pancetta to a small bowl.
  • Add the remaining 2 tablespoons of olive oil to the pan.
  • Add the shallots and cook for 30 seconds.
  • Add the mushrooms and cook, stirring frequently, until all of the moisture has evaporated, about 12 minutes.
  • Remove the pan from the heat and stir in the cooked pancetta along with the fresh thyme, salt, and pepper.
  • Set aside to cool for 10 minutes.
  • Place an oven rack in the lower third of the oven and preheat the oven to 400F.
  • Unwrap the chilled dough and place it on a sheet of parchment paper.
  • Roll the dough into an 11-inch circle, about 1/4 inch thick.
  • Lift the parchment paper and transfer it and the dough to the baking sheet.
  • Stir the mozzarella and fontina into the cooled mushroom filling and spread in the center of the dough circle, leaving a 2-inch border.
  • Sprinkle the filling with the Parmesan.
  • Fold the dough border up over the filling to form an 8-inch round, pleating the edge of the pastry.
  • Brush the crust with the beaten egg.
  • Bake the crostata until the crust is golden, about 25 minutes.
  • Slice and serve.