Ingredients

  • 2 zucchini, sliced diagonally 1/3 inch thick
  • 1/2 pound shiitake mushrooms, stemmed
  • 1/2 pound thick asparagus, peeled
  • 1 red onion, sliced 1/3 inch thick
  • 1/2 cup extra-virgin olive oil, plus more for brushing
  • Salt and freshly ground black pepper
  • 1 cup walnuts
  • 1 small shallot, very finely chopped
  • 1 teaspoon thyme leaves
  • 1 tablespoon freshly squeezed lemon juice
  • 1/2 teaspoon finely grated lemon zest

Method

  • Preheat the oven to 350.
  • Light a grill.
  • Brush the zucchini, mushrooms, asparagus and onion with olive oil and season with salt and pepper.
  • Grill the vegetables over high heat, turning occasionally, until lightly charred in spots and tender, 15 to 18 minutes.
  • Transfer the grilled vegetables to a serving platter.
  • Meanwhile, spread the walnuts in a pie plate and toast for about 12 minutes, until fragrant.
  • Let cool completely.
  • Transfer the toasted walnuts to a food processor.
  • Add the shallot, thyme, lemon juice, lemon zest and the 1/2 cup of olive oil and pulse until the nuts are coarsely chopped.
  • Season the dressing with salt and pepper and drizzle over the grilled vegetables.
  • Serve.