In a sauce pot, add the quinoa and water, cook the quinoa according to the directions on the package. Let cool completely before adding the rest of the ingredients. You could even make the quinoa ahead of time, up to the night before, and then store in the refrigerator until you need it.
In a large bowl, combine the cooked quinoa, walnuts, apple, dried cranberries, celery, green onions, and radish.
In a smaller bowl, add in the apple cider vinegar, honey, Dijon mustard, olive oil, orange zest, orange juice, and salt and pepper. Whisk to combine, then pour over the quinoa cran-apple salad.
Gently stir the ingredients with the vinaigrette to combine. Serve immediately, or store in an airtight container in the refrigerator until time to serve. Can be in the fridge for up to a week. Add grilled chicken or steak to make it a complete meal.