In a food processor, combine cilantro, yogurt, lime juice, and garlic. Blend until smooth.
With the motor running, slowly add olive oil through the feed-tube. Season to taste with salt and pepper (I like 1/4 teaspoon salt and a pinch of pepper). Chill until serving.
Plain Greek yogurt: For a richer texture and flavor, opt for a fat level of 2% or higher. That said, any plain Greek yogurt from 0% up works for this creamy salad dressing. Sour cream is a great substitute, if you prefer.
Garlic: Mince the garlic before adding to the food processor, otherwise, you may be left with large chunks of garlic in the salad dressing. (Which I certainly don't mind, but know that not everyone loves.)
Yield: This Creamy Cilantro Lime Dressing recipe makes about 2 cups. This is equivalent to 32 tablespoons, enough for 16 2-tablespoon servings.
Storage: Store leftovers covered in the refrigerator for up to 4 days.