Gather all the ingredients on your countertop for easy access. Make sure your avocado is ripe for the best creaminess.
In your blender or food processor, combine the buttermilk, avocado, and honey. Blend until smooth and creamy.
Next, add the garlic, basil, parsley, dill, rosemary, dried onion, and chives to the blender.
Sprinkle in the salt and a few cracks of black pepper. Blend once more until everything is well combined and the herbs are finely chopped.
If the dressing is too thick, you can add a little more buttermilk to reach your desired consistency. Blend again to combine.
Taste your dressing and adjust the seasoning if necessary. You might want a bit more salt or a touch more honey, depending on your preference.
Transfer your Avocado Ranch Dressing to a jar or airtight container. It’s best served cold, so refrigerate for at least 30 minutes before enjoying.