Prepare ingredients including the dressing and have each item ready for layering. Place about a quarter cup of the dressing at the bottom of a mason jar. Layer each vegetable into the jar in the order listed in the ingredients list with the Romaine being the last item you place into the jar on top.
To eat shake until dressing is absorbed into the full salad or just dump upside down and the items will all layer on top of the Romaine.