Bring a large pot of water to a boil on the stovetop. Add your cauliflower florets, cashews, onion, and garlic. Allow to simmer for 8 minutes, or until the cauliflower can be very easily pierced with a fork.
Drain the water. Add your cauliflower, cashews, onion, and garlic to a high powered blender. Add all other ingredients as well. Blend until very smooth. Add more salt to taste if desired.
Add to pasta, pour on roasted veggies, toss onto baked potatoes, or whatever else your heart desires! (If adding to pasta you may want to add a few tablespoon of pasta water to the sauce so that it sticks to the noodles a bit better). Enjoy!