Tartness of and size of Pink lady works best with the Oreo cookies... Pink ladies are also more firm and last longer than many varieties.
To remove the wax coating from store purchased apples you can dip them in boiling water mixed with a splash of vinegar for a few seconds remove and dry. Allow to cool. Push the round stick into the bottom of each apple.
Nutrition info assumes about 80-85% of the toppings will adhere to apples.
Courtesy of Mom Foodie - Oreo Caramel Apples find it at https://momfoodie.com/oreo-caramel-apples-recipe/