Place 2 ice cube trays on a baking sheet.

Place the chopped chocolate and chocolate chips in a heat resistant bowl.

In a saucepan, heat together the sweetened condensed milk and heavy whipping cream.  Heat over medium heat.  Stir and bring the mixture to a low simmer.  Make sure to stir frequently so that the milk does not boil over or burn.

Once the mixture is simmering, pour the mixture over the chocolate in a bowl.  Let it sit for 1-2 minutes to melt the chocolate.  Then stir until the chocolate is fully melted and all the ingredients are combined.

Transfer the mixture to a piping bag.  Pipe the mixture into each of the ice cube trays filling them up approximately ¾ of the way full.  Top each of the cubes with 4-5 mini marshmallows and place 1 stick into each of the chocolate squares.

Refrigerate the chocolate cubes for at least 4 hours (overnight is preferred).  Then carefully remove the hot chocolate on the sticks from the ice cube trays and then they are ready to serve and enjoy!

When you are ready to serve, warm the milk and pour it into serving mugs.  Add the hot chocolate on a stick (½ cup of milk per hot chocolate stick) and allow the chocolate to melt.  Use the stick to stir the ingredients so that all the ingredients are combined.  Serve warm and enjoy!