Ingredients
- 12 oz spaghetti or other long pasta
- Kosher salt
- 4 garlic cloves, thinly sliced
- 1/4 c extra-virgin olive oil, plus more for drizzling
- 3 oil-packed anchovy fillets (optional)
- 1/4 tsp crushed red pepper flakes
- 4 tbsp unsalted butter, cut into pieces
- 3/4 c finely grated Parmesan, plus more for serving
- Freshly ground black pepper
- 1/3 c finely chopped parsley
- 1 tsp finely grated lemon zest
- 1 tbsp fresh lemon juice
Directions
- Cook pasta in large pot of boiling salted water, stirring occasionally, until very al dente (about 3 minutes less than package directions).
- Meanwhile, cook garlic and 1/4 c oil in large heavy pot over medium heat, stirring occasionally until garlic is golden (about 4 minutes).
- Add anchovies (if using) and red pepper flakes and cook, smashing anchovies with wooden spoon to break them up until anchovies dissolve (about 1 minute).
- Add 1 1/4 c pasta cooking liquid to pot with anchovies and garlic.
- Cook mixture, stirring, for about 1 minute.
- Using tongs, transfer pasta to pot, then add butter, 3/4 c Parmesan, and lots of black pepper.
- Cook while tossing energetically and adding more pasta cooking liquid if needed, until pasta is al dente and sauce is thickened to coat pasta (about 4 minutes).
- Remove from heat.
- Add parsley, lemon zest, and lemon juice.
- Divide evenly among bowls, finish with a drizzle of oil and more Parmesan.