Cook pasta according to package instructions. Reserve 1 cup of pasta cooking water and drain.
Add the rest of the ingredients into a food blender and blend until smooth.
Pour the sauce into the same pot you cooked the pasta in. Cook over medium-low heat for 2-3 minutes, stirring frequently. Add some reserved pasta water if it gets too thick.
Add pasta and toss. Top with additional parmesan cheese or lemon juice, as desired.
