– 1 medium head of iceberg lettuce – 1 cup cherry tomatoes — chopped – 1/4 cup Crumbled blue cheese – 1/4 cup purple onions — chopped – 8 sliced bacon — cooked and chopped – 1 tbsp Parsley — chopped (optional) – Dressing: – 1/2 cup crumbled blue cheese – 1/2 cup sour cream or Greek yogurt – 1/4 cup mayonnaise – 1 small garlic clove — minced – 1 tbsp milk – 2 tbsp lemon juice — or vinegar – 1/2 tsp salt – black pepper to taste