Chicken Salad with Caesar Dressing

Name: Chicken Salad with Caesar Dressing
Ingredients: 1 whole-grain English muffin, halved; 5 ounces diced canned or fresh cooked chicken breast; Caesar Dressing, recipe follows; Lettuce leaves, optional; Tomato slices, optional; Onion slices, optional; 1/3 cup mashed ripe avocado (from about 1/2 avocado); 1 clove garlic, minced (about 1 teaspoon) or 1/4 teaspoon garlic powder; 2 tablespoons fresh lemon juice; 2 teaspoons Worcestershire sauce; 1/2 teaspoon Dijon mustard; 1/4 cup grated Parmesan cheese; 3/4 teaspoon kosher salt or coarse sea salt; 1/2 teaspoon ground black pepper; 1 teaspoon anchovy paste, optional