To make the dressing, add the garlic, yogurt, parmesan, mustard, vinegar, anchovy paste, lemon juice, salt and pepper to a food processor and blend until pureed. With the processor still on, stream in the olive oil until a creamy dressing forms. (This will make more dressing than needed, but you can store it sealed in the fridge for about 3-4 days and stir well before using.)