01 - Preheat oven to 350°F (180°C).
02 - In a medium oven-safe skillet or baking dish, arrange the semisweet chocolate chips and chopped milk chocolate in an even layer.
03 - Pour the heavy cream over the chocolate mixture, distributing it evenly.
04 - Place the marshmallows on top of the chocolate in a single, uniform layer.
05 - Transfer the dish to the oven and bake for 8 to 10 minutes, or until the chocolate is melted and the marshmallows are golden brown and puffed.
06 - Remove from the oven and allow to cool for 2 minutes.
07 - Sprinkle the assorted popping candy generously over the marshmallow layer immediately before serving for a crackling effect.
08 - Serve promptly with graham cracker sticks, pretzel sticks, and banana slices for dipping.