Okay, I played around with ingredients and here is a copycat recipe that is close to the original.
Burger King Ken’s Creamy Apple Cider Vinaigrette Copycat
1/2 tsp Spiced Cider Apple Flavor Drink Mix powder (sugar-free like Alpine or Mott’s)
1/3 cup Vanilla Yogurt (like Dannon)
1/2 cup Mayonnaise
2 tsp Cider Vinegar
Add ingredients to a small mixing bowl. Mix well.
Use on Chicken, Apple & Cranberry Garden Fresh Salad, etc.
Makes about 1 cup.