Step 1

Toast the English muffin and set aside.

Step 2

In a bowl, add the chicken and some of the Caesar Dressing and toss to combine.

Step 3

Layer both halves of the English muffin with lettuce, tomato and onion slices, if desired. Spoon the chicken salad mixture evenly on top.

Step 4

Place the avocado, garlic, lemon juice, Worcestershire, mustard, Parmesan, salt, pepper, anchovy paste, if using, plus 6 tablespoons water in a food processor or powerful blender and mix until thoroughly combined and smooth.