Cook pasta according to package directions in a well salted pot of water. Reserve ¼ cup of the pasta water.

While the pasta is boiling/you're waiting for the water to boil, in a pan over medium high heat, heat the vegan butter or olive oil. Add the onion, stir and let cook until translucent, about 5 minutes.

Remove the onions from the pan and add it to a blender. Add the rinsed off soaked cashews (without the water), the pasta water, the almond milk, the roasted garlic, the nutritional yeast, the sea salt the vegan parmesan cheese and the lime juice. Blend it all together until completely creamy. If you have a high powered blender this will happen quickly, about 1 minute, if not, just keep blending until completely smooth and creamy. Taste and add more salt or vegan parmesan cheese if necessary.

When the pasta is finished boiling, drain and pour back into the pan you had used earlier or even into a Tupperware container if you want. Pour the Alfredo sauce over and stir to combine completely.

When serving, top with parsley to garnish and more vegan parmesan cheese. Enjoy!