Line a baking sheet with parchment paper to prepare for the chocolate.
Gently melt the dark chocolate using a double boiler or in a microwave, heating in 30-second intervals and stirring until smooth and glossy.
Pour the melted chocolate onto the prepared parchment, spreading it evenly with a spatula to create a thin, smooth layer.
Sprinkle crushed Oreos, gummy worms, toasted pecans, and edible glitter over the warm chocolate, distributing toppings evenly for a playful look.
If using, add a few drops of peppermint extract onto the toppings for a fragrant, festive touch.
Allow the chocolate to set at room temperature for about 2 hours, or refrigerate for 30 minutes for quicker firming.
Once firm, break the chocolate into rustic shards using your hands or a knife, revealing the colorful toppings embedded in glossy chocolate.
Enjoy your spooky, shiny Halloween bark—perfect for sharing or indulging all on your own!