Drain the soaked cashews and add them to your blender along with unsweetened almond milk, lemon juice, turmeric, garlic powder, smoked paprika, and a pinch of salt.
Blend on high until completely smooth and velvety, about 2-3 minutes, stopping to scrape down sides as needed. The sauce should be silky and oozy.
While blending, bring a large pot of salted water to a boil. Cook your pasta until al dente, about 9-11 minutes, then drain and set aside.
In a dry skillet over medium heat, toast the nutritional yeast for about 2 minutes until fragrant, stirring constantly to prevent burning.
Pour the blended sauce into a saucepan and warm over low heat, stirring constantly. Once heated through and slightly thickened, about 3-4 minutes, taste and adjust seasoning with more salt or lemon if needed.
Add the cooked pasta to the sauce, tossing gently to coat each piece evenly. Let it cook together for another minute so flavors meld and the sauce thickens slightly.
Serve immediately, garnished with extra nutritional yeast or chopped herbs if desired, for a warm, velvety, cheesy-looking dish that’s ready to enjoy.