Kosher salt
12 ounces spaghetti
2 bunches Earthbound Farm Organic Broccolette (about 1 lb.)
1/4 cup olive oil
  red pepper flakes (to taste)
3 cloves garlic (crushed in a garlic press)
1 large lemon (grated zest)
2 tablespoons fresh lemon juice
1 1/3 cups ricotta cheese (preferably whole milk)
1/3 cup mascarpone cheese
1/4 cup minced fresh basil
1 cup toasted walnut pieces (optional)
  freshly ground balck pepper
  grated ricotta salata or Parmesan cheese (as garnish)