Romaine and Broccoli Salad with Roasted Garlic Dressing

Ingredients (16)

• DRESSING:
• 2 heads garlic,
• 1 tablespoon olive oil
• 1 cup mayonnaise
• 1/2 cup buttermilk
• 2½ tablespoons minced fresh chives
• 1 tablespoon freshly squeezed lemon juice
• 1¼ teaspoons celery salt
• 1/4 teaspoon freshly ground black pepper
• VEGETABLES:
• 3 whole hearts of Romaine,
• 1 pint grape tomatoes
• 1½ cups small broccoli florets
• 1 small English hothouse cucumber,
• 8 ounces thinly sliced mushrooms
• 1 small red onion,