I am allergic to all dairy and miss ranch dressing so very much! Here is a version I came up with to satisfy my craving... Tastes almost like the real thing!
Put all ingredients into the blender except for the 2-3 tablespoons water.
Blend on a slow speed and add the additional water a tablespoon at a time until using a rubber spatula you can get all to blend well until creamy and smooth.
Put in a covered container or jar and refrigerate for several hours or overnight.