Ingredients

  • 1 1/2 pounds parsnips (12 to 16), peeled, trimmed, and halved lengthwise (quartered, if large)
  • 2 tablespoons extra-virgin olive oil
  • Coarse salt and freshly ground pepper
  • 1 bunch celery hearts, cut diagonally into 1/8-inch-thick slices
  • 1/2 cup celery leaves
  • 1 green apple, such as Granny Smith, cored, halved, and cut into 1/8-inch-thick wedges
  • Hazelnut Vinaigrette (recipe follows)
  • 1/3 cup hazelnuts (about 1 ounce)
  • 1/4 cup extra-virgin olive oil
  • 1 shallot, finely chopped
  • 1 tablespoon plus 1 teaspoon sherry vinegar
  • 2 teaspoons fresh lemon juice
  • Coarse salt
  • 1/4 cup hazelnut oil or light vegetable oil, such as canola
  • Freshly ground pepper
  • (makes about 3/4 cup)

Method

  • Preheat the oven to 375F.
  • Toss the parsnips with the oil; season with salt and pepper.
  • Spread the parsnips in a single layer on a rimmed baking sheet.
  • Roast until golden brown and tender, about 30 minutes.
  • Let cool slightly on the sheet on a wire rack.
  • Divide the parsnips among 6 serving plates.
  • Put the celery hearts and leaves, apple, and 1/4 cup vinaigrette in a nonreactive bowl; season with salt and pepper.
  • Toss well, and arrange on top of the parsnips.
  • Preheat the oven to 375F.
  • Spread the hazelnuts in a single layer on a rimmed baking sheet.
  • Toast in the oven until the skins split and the flesh turns deep golden brown, 10 to 12 minutes.
  • While they are still hot, rub the hazelnuts in a clean kitchen towel to remove skins (some will remain).
  • Coarsely chop.
  • Heat the hazelnuts, olive oil, and shallot in a small skillet over medium heat, stirring, until the shallot softens, about 2 minutes.
  • Let cool slightly.
  • Stir together the vinegar, lemon juice, and 3/4 teaspoon salt in a medium bowl.
  • Whisking constantly, pour in the hazelnut oil and then the hazelnut mixture in a slow, steady stream; whisk until emulsified.
  • Season with salt and pepper.