In a blender, combine all the ingredients except for the tuna and blend until smooth and creamy.
In a bowl, flake the drained tuna with two forks into small pieces.
Pour about 1/4 cup or more of the green goddess dressing over the tuna and mix well.
Taste and adjust seasoning with salt and pepper if needed. Then, enjoy your salad with chips, in a lettuce wrap, or in a sandwich!