Marshmallows, candy canes, gingerbread man cookies, etc for dipping.
Instructions
In a medium saucepan, combine the sweetened condensed milk, cocoa powder, chocolate hazelnut spread, chocolate chips, and chopped chocolate.
Heat over medium, stirring constantly, until all the chocolate has melted and the mixture is smooth. It will be rather thick.
While continuing to stir, slowly pour in the heavy cream and mix until well incorporated. Portion into individual mugs, top with marshmallows, and serve.