Celery Caesar Salad

Name: Celery Caesar Salad
Ingredients: 2 slices 2-inch-thick country-style bread, crusts removed, torn into bite-size pieces; 8 tablespoons olive oil, divided; Kosher salt; 1 medium celery root (celeriac), peeled; ½ lemon; 1 large egg yolk; 1 garlic clove, peeled; 2 tablespoons fresh lemon juice; 3 oil-packed anchovy fillets, divided; Freshly ground black pepper; 4 celery stalks, sliced in half lengthwise, thinly cut on a diagonal, plus about ½ cup celery leaves (from about 1 head of celery); 2 ounces Parmesan, shaved