Celery Salad with Green Apple Vinaigrette

Name: Celery Salad with Green Apple Vinaigrette
Ingredients: 1 medium Granny Smith apple; 4 sprigs fresh parsley; 1 clove garlic; 3 tablespoons apple cider vinegar; 2 teaspoons maple syrup or honey; 1/2 teaspoon kosher salt, plus more as needed; 1/4 teaspoon freshly ground black pepper, plus more as needed; 1/3 cup extra-virgin olive oil; 1 medium bunch celery (about 8 large and medium stalks); 1 medium shallot; 6 pitted dried Medjool dates; 1/2 cup roasted, salted almonds; 1/3 cup grated Pecorino Romano or Parmesan cheese, plus more as needed