This treat is amazing! Have craved it every year since it was introduced to me as kris mallow balls as a child. However, no recipe I've ever dug up tells the best way to store these after placing on wax paper to harden for a couple hours. Any ideas whether countertop container or refrigerated is better? Thanks!

Take a look at this: I heated the milk, butter and caramels in the microwave then dipped the large marshmallows and rolled them in the caramel mixture.