Blend the dressing: Place the garlic and feta in the bowl of a food processor fitted with the blade attachment and process until smooth. Scrape down and process again. If using the parsley, add it now. Add the yogurt, lemon juice, and pepper and process, scraping down as needed, until everything is incorporated.
Add the olive oil: With the machine running, drizzle the olive oil through the feed chute, creating a creamy emulsion. Taste and season with salt as needed and transfer to a pouring vessel or jar. Store any leftover dressing in an airtight container in the fridge for up to 3 days. Shake well before using. Love the recipe? Leave us stars and a comment below!
