the minced garlic, anchovies, and pepper flakes and toss
until fragrant, about 30 seconds. Remove from the heat
and stir in the butter. Set aside.
Place the pasta in a large pot and cover with hot water.
Add a large pinch of salt and bring to a boil over high
heat, stirring occasionally to keep the pasta from sticking.
Continue to cook until the pasta is fully softened but
retains a slight bite in the center (about 1 minute less than
the box recommends after the pasta reaches a boil). Drain
the pasta, reserving ½ cup of the cooking liquid, and
return to the pot, set over medium-low heat.
- Add the broccoli, using a rubber spatula to scrape out
any garlic and juices from the pan. Increase the heat to
high, add half of the reserved pasta water, and stir until
the sauce comes together and coats the pasta, about 2
minutes, adding more pasta water as necessary until the
desired consistency is reached. Stir in the lemon zest and
juice and cheese and season to taste with salt and pepper.
Serve immediately, passing Parmesan at the table.