Roasted-Garlic and Buttermilk Salad Dressing

Name: Roasted-Garlic and Buttermilk Salad Dressing
Prep time: 10 minutes
Total time: 55 minutes
Yield: Makes about 1 3/4 cups Servings
Ingredients: 2 heads of garlic; 2 tablespoons olive oil; 1 cup mayonnaise; 1/2 cup buttermilk; 7 tablespoons freshly grated Parmesan cheese; 2 tablespoons fresh lemon juice; 3/4 teaspoon Worcestershire sauce