Set your oven on a low broil.
Line a baking sheet with a silicon mat or some parchment paper.
Spread marshmallows on prepared sheet.
Place the prepared sheet under broiler just until the marshmallows begin to turn brown.
Remove the silicone mat or the parchment paper immediately from the pan and place it in the freezer for about 10-15 minutes.
The marshmallows may still be too sticky for you to handle so you can optionally dust them with powder sugar to reduce stickiness.
Combine the marshmallows, chocolate and cereal in bowl 1 handful at a time to mix well.