Ingredients

  • 1/4 cup extra-virgin olive oil
  • 1 large lemon, zested and juiced
  • 2 teaspoons salt
  • 1/2 teaspoon freshly ground black pepper
  • 1 pound penne rigate pasta
  • 1/2 stick (1/4 cup) unsalted butter, cut into 1/2-inch pieces, at room temperature
  • 4 cups baby arugula
  • 1 cup cherry or grape tomatoes, halved
  • 1 cup grated Parmesan
  • 1/2 cup toasted pine nuts (see Cook's Note)
  • 2 tablespoons capers, rinsed and drained

Method

  • For the dressing: In a small bowl, whisk together the olive oil, lemon juice, lemon zest, salt, and pepper until smooth.
  • Set aside.
  • For the pasta: Bring a large pot of salted water to a boil over high heat.
  • Add the pasta and cook until tender but still firm to the bite, stirring occasionally, 8 to 10 minutes.
  • Drain and reserve about 1 cup of the pasta water.
  • In a high-sided skillet, whisk the butter over medium heat until melted.
  • Simmer until foamy.
  • Continue to cook until the butter has a nutty aroma and turns a caramel color, 3 to 5 minutes.
  • Remove the pan from the heat.
  • Add the pasta, dressing, arugula, tomatoes, Parmesan, pine nuts, and capers.
  • Toss until coated, adding the reserved pasta water, 1 tablespoon at a time to loosen the sauce, if needed.
  • Transfer to a large bowl and serve.
  • Cook's Note: To toast the pine nuts, arrange in a single layer on a baking sheet.
  • Bake in a preheated 350 degrees F oven until lightly toasted, 6 to 8 minutes.
  • Cool completely before using.