Ingredients

  • 1 cup walnut halves (4 ounces)
  • 2 cups lightly packed basil leaves
  • 1 large garlic clove, thinly sliced
  • 1/4 cup extra-virgin olive oil
  • 3/4 cup freshly grated Parmigiano- Reggiano cheese
  • Salt and freshly ground pepper
  • 1 pound whole wheat lasagna noodles, broken into 1-inch pieces
  • 6 ounces watercress, arugula or other bitter greens, thick stems discarded and leaves coarsely chopped
  • Sauteed mushrooms, for serving

Method

  • Preheat the oven to 350.
  • Bring a large pot of salted water to a boil.
  • Spread the walnuts on a baking sheet and toast for 8 to 10 minutes, until they are fragrant and lightly browned.
  • Let cool completely.
  • Coarsely chop half of the walnuts and set the remaining toasted walnuts aside.
  • In a food processor, pulse the remaining walnuts with the basil and garlic until the walnuts are finely chopped.
  • With the machine on, add the olive oil in a thin stream and process until the pesto is almost smooth.
  • Add 1/2 cup of the cheese and pulse until just incorporated.
  • Transfer the walnut pesto to a bowl and season it with salt and pepper.
  • Add the broken lasagna noodles to the boiling water and cook until al dente.
  • Drain the pasta, reserving 1/2 cup of the pasta cooking water.
  • Return the drained pasta to the pot.
  • Add the watercress and walnut pesto and toss well.
  • Add the reserved pasta water and toss again until well coated.
  • Transfer the pasta to bowls, garnish with the remaining 1/4 cup of cheese, the chopped walnuts and sauteed mushrooms and serve.