Peel the garlic clove and give it a rough chop. Remove the stems from the fresh cilantro and chop the leaves. Preparing these ingredients first helps them blend more evenly.
Place the cottage cheese, prepared cilantro, garlic, and lime juice into a blender, food processor, or immersion blender chopper cup.
Process the mixture until it becomes completely smooth and creamy. Stop as necessary to scrape down the sides of the container so that all ingredients are incorporated evenly.
Taste the blended mixture and adjust the flavor as necessary. Pour in the olive oil, then blend again until the dressing is thoroughly combined and has a uniform, creamy consistency.
Add salt and pepper according to taste, making any final seasoning adjustments needed for balance. Transfer the finished dressing to a suitable container and refrigerate until serving so the flavors have time to meld.