First, drain the cashews and place them into your high-speed blender. Add the rest of your ingredients, and blend until the mixture is smooth and there are no remaining bits of cashew.
Pour the mixture into a saucepan and cook it over medium heat, stirring constantly, until it thickens up and turns cheesy, about 8 minutes.
At first it may look a bit chunky, but don’t worry. This is what happens right before the magic—it smooths out into a nice, cheesy, silky sauce.
Remove from heat, and use immediately over your favorite whole grain pasta! Store in the fridge for up to a week.
To reheat, grab a saucepan, add your sauce and cook on medium heat for a few minutes until it turns smooth and is heated through. You may need to add a splash of water if it’s a bit thick.