Butter Lettuce with Goat Cheese Green Goddess Dressing

Name: Butter Lettuce with Goat Cheese Green Goddess Dressing
Yield: 16 Servings
Ingredients: 1 5-ounce package soft fresh goat cheese; 2/3 cup sour cream; 2 cups buttermilk; 2 medium avocados; 2 tablespoons chopped fresh tarragon; 2 tablespoons chopped fresh parsley; 2 tablespoons chopped fresh chives; 8 large heads of butter lettuce, quartered lengthwise (leaving some core attached)