Boil the pasta in a large pot or pan with water. Then drain but save the pasta water.
For the lemon cashew cream: Add the cashews, lemon juice, and water into a blender. If you have the time, let it soak (even 10 min would be fine). Then blend until completely smooth.
Add the lemony cashew cream to the pan. Thin the sauce out with pasta water as needed. Add more salt to taste. Then add the drained pasta and stir to combine.
Add the pasta onto plates, top with freshly chopped parsley and cashew parmesan. And enjoy!