In a high-speed blender, combine the cashews, water, lemon juice, garlic powder, and onion powder. Process until very smooth.
Stir in the dried parsley, dried chives, and salt and pepper, to taste.
Refrigerate until ready to use.
For the Nutrition Facts, a serving is one tablespoon.For a thinner dressing, add a little more water.If you want a more tangy dressing, try adding additional lemon juice or some apple cider vinegar. You can also add additional herbs such as 1/2 teaspoon of dried dill.Store the dressing in the refrigerator for up to a week in a glass container.