Place your raw cashews in a high powered blender. Cover with boiling water. Allow to sit for 5-10 minutes. Drain and return cashews to blender.
Add almond milk, lemon juice, olive oil, garlic, nutritional yeast, cayenne pepper, salt, and pepper to the blender. Blend on high, until mixture is smooth.
If adding to pasta, transfer to pot with drained pasta and stir over low heat until warmed. This Alfredo sauce recipe works well with 8-10oz package of pasta. If using with other proteins, heat Alfredo sauce in a small saucepan over low heat, stirring occasionally, until warm.
Notes
Don't have a high-speed blender? A food processor can be used in its place.
If you want a thinner sauce, add a little more almond milk.