Beat the cream cheese and marshmallow fluff until creamy.
Place the white chocolate chunks in a microwave safe bowl. Heat for 30 seconds. Stir. Heat again for 15-20 seconds. Stir until melted and creamy.
Pour the melted chocolate into the cream cheese mixture and beat until mixed in. Use a spatula to scrape the sides of the bowl, making sure all the ingredients get mixed in.
Slowly pour in the heavy cream as the mixture is beating. Once all the cream has been mixed in, increase the speed on your mixer and beat the cheesecake mixture for a few minutes or until light and fluffy.
Refrigerate the cheesecake dip for 1 hour. Spoon into a bowl and top with peppermint bits when ready to serve it. Serve with an assortment of cookies, sweet crackers, and chocolate.