Ingredients

  • 1 1/4 cups all-purpose flour, plus more for the work surface
  • 3/4 cup white cornmeal, such as Weisenbergers
  • 1 teaspoon kosher salt
  • 1/2 cup (1 stick) unsalted butter, chilled and cut into small pieces
  • 1 large egg yolk
  • 3 to 6 tablespoons ice water
  • 8 small new potatoes, medium dice (about 3 cups)
  • 1 large yam, peeled and medium dice (about 3 cups)
  • 2 parsnips, peeled and medium dice (about 1 cup)
  • 2 stalks celery, chopped (about 2/3 cup)
  • 12 medium shiitake mushrooms, stems discarded and caps cut into 1/2-inch pieces (about 1 3/4 cups)
  • 8 tablespoons vegetable oil
  • Salt and freshly ground black pepper
  • 4 tablespoons all-purpose flour
  • 4 cups mushroom broth, warmed
  • 1/2 cup frozen peas
  • 6 sprigs fresh thyme, leaves stripped and chopped
  • 1/2 sprig fresh rosemary, leaves stripped and chopped
  • 2 tablespoons sherry vinegar

Method

  • For the crust: Combine the flour, cornmeal, and salt in a food processor and pulse to combine.
  • Add the butter and pulse just until it resembles coarse crumbs.
  • In a small bowl, whisk together the egg yolk and 2 tablespoons ice water.
  • With the processor running, drizzle in the yolk mixture.
  • The dough should just come together.
  • If it looks dry add more water, up to 4 tablespoons.
  • Turn the dough out onto a floured surface and knead until it comes together; it will be stiffer than a regular pie crust because of the cornmeal.
  • Divide into four pieces, press into discs, and wrap in plastic wrap.
  • Refrigerate for 30 minutes.
  • Preheat the oven to 400 degrees F.
  • For the filling: Toss the potatoes, yam, parsnips, celery and mushrooms with 4 tablespoons oil.
  • Season with salt and pepper and spread evenly on a baking sheet.
  • Roast, tossing once halfway through, until golden brown, about 20 to 25 minutes.
  • You don't want to cook these all the way though since they will cook more in the pot pie.
  • (They should be al dente, but starting to get some color.)
  • Combine the flour and remaining 4 tablespoons oil in a saucepan over medium heat and cook until smooth and bubbly like pancake batter, about 3 minutes.
  • Whisk in the mushroom broth.
  • Simmer until thick enough to coat the back of a spoon.
  • Season to taste and remove from the heat.
  • Add the roasted veggies to the mushroom broth along with the peas, thyme, rosemary and sherry vinegar.
  • Divide the filling among four 8-ounce ramekins.
  • Remove the dough from the fridge and roll each into a 5-inch disc.
  • Wet the rim each ramekin and lay a crust over the top.
  • Poke each 5 or 6 times with a fork and place in the oven.
  • Bake until the crust is golden brown, about 20 to 25 minutes.