Pantry Pasta

spaghetti or other long pasta

Kosher salt

garlic cloves, thinly sliced

extra-virgin olive oil, plus more for drizzling

oil-packed anchovy fillets (optional)

crushed red pepper flakes

finely grated Parmesan, plus more for serving

unsalted butter, cut into pieces

Freshly ground black pepper

finely chopped parsley

finely grated lemon zest

fresh lemon juice