Ingredients

  • 12 oz. spaghetti
  • 1 1/2 lemons
  • 1 tbsp. unsalted butter
  • 1/2 c. grated Parmesan, plus more for serving
  • 1 tsp. red pepper flakes
  • 3 oz. prosciutto
  • 4 c. arugula
  • kosher salt
  • Black pepper

Method

  • Bring a large pot of salted water to boil.
  • Cook spaghetti until al dente, 8 to 10 minutes.
  • Drain, reserving 1 cup of cooking liquid, and return to pot.
  • Zest and juice 1 lemon and place in a small bowl.
  • Thinly slice remaining 1/2 lemon into half moons and remove seeds.
  • Set aside.
  • Add lemon juice and zest, butter, Parmesan, and 1/2 cup pasta water to pot.
  • Stir gently to combine, adding additional pasta water until creamy.
  • Add red pepper flakes, prosciutto, arugula, and lemon slices and toss until arugula just begins to wilt.
  • Season with salt and pepper, garnish with Parm, and serve.