Wash and dry fruits like strawberries, marshmallows, cake slices into bite-sized pieces.
Arrange all dippers on a platter.
In a heavy-bottomed saucepan, heat the heavy cream over medium heat until it starts to simmer.
Once simmering, remove from heat and add the chopped chocolate to the cream.
Let it sit for a minute to soften, then stir until the chocolate is completely melted and smooth.
Once the chocolate is smooth, add the unsalted butter.
Stir until the butter is completely melted and the mixture is well combined.
Pour the melted chocolate mixture into a fondue pot or a heatproof serving bowl. If using a fondue pot,light the burner underneath according to the manufacturer's instructions.
Place the fondue pot on the table, surrounding it with the platter of assorted dippers and fondue forks or skewers.
Dip your choice of dippers into the warm chocolate fondue and enjoy.