Combine: Add all ingredients to a food processor or wide mouth mason jar (or other container suitable for using with an immersion blender). Blend until smooth.
Taste: Adjust any seasonings, as desired.
Serve: Use immediately or store in an airtight container in the refrigerator for up to 3 days.
Notes
Dairy-Free: use a plain, unsweetened dairy-free yogurt in place of the plain Greek yogurt and use a dairy-free sour cream.