Put all ingredients into a blender (or use a deep container with a stick blender) and blend until mostly creamy. I prefer mine with a bit of chunkiness from the feta but you can blend to your desired consistency.
Store in the fridge and use up within about a week, maybe two depending on the stale date of your yogurt and feta.
Recipe Notes
The ingredients listed here are really just a guide. Like your dressing garlicky or really like dill? Add more. Enjoy