0 Combine the diced apple, diced celery, halved grapes and chopped walnuts in a large bowl and set aside
1 Whisk together 1/2 cup of mayonnaise, 1/2 cup of unsweetened vanilla almond milk, 1 teaspoon of freshly squeezed lemon juice, 1 teaspoon of granulated sugar and a pinch of black pepper (for further instructions, see my waldorf salad dressing recipe)
2 Add 1/2 cup of dressing into the apples, celery, grapes and walnuts and toss to combine
3 Transfer leftover dressing into an airtight container and refrigerate
4 Place 1 cup of chopped romaine lettuce into a bowl and top with half of the waldorf salad
5 Repeat for the second serving
6 Garnish with finely chopped parsley