Add all dressing ingredients except oil (lemon juice through Parmesan cheese) to the pitcher of a blender; blend until smooth. With blender running, slowly add olive oil and continue to blend until thoroughly combined. Season to taste with salt and freshly ground black pepper.
Transfer dressing to a small pitcher and it's ready to serve alongside or toss with romaine lettuce and parmesan cheese to make a classic Caesar Salad.
This recipe makes ample Caesar Salad Dressing, so take care not to overdress your salad. Add less dressing than you think you'll want, toss and add more dressing as needed.