Start by lining a baking sheet with parchment paper. Set aside.
In a microwave-safe bowl, add 3/4 of your dark chocolate. Melt in the microwave in 30 second intervals, stirring well after each heating. Heat until chocolate is almost completely melted (with a few chocolate pieces remaining).
Add remaining 1/4 cup of your dark chocolate to the already melted chocolate and stir until all chocolate has fully melted. If your chocolate is still thick - return to the microwave for an additional 5-10 seconds, and stir as needed to melt. Chocolate should be shiny and liquid.
Pour melted chocolate onto parchment lined baking sheet and spread flat with spoon or spatula (note: thickness of chocolate layer is up to you however for ease of handling, I recommend ~1/4 inch thick)
Optional: Melt white chocolate in 20 second increments, stir and add food colouring (or freeze-dried raspberry powder). Add dollops of white chocolate to bark and swirl through bark with a knife.
Top with scattered dried cherries, cacao nibs, and mini chocolate pieces onto melted chocolate.
Place in the freezer or fridge to set quickly (3-5 min in freezer, ~15 min in fridge) or in a cool, dark, place to slowly set over 2-4 hours. You will know that the Black Forest Chocolate Bark is ready when it is hard to the touch, not tacky, and at room temperature makes a crack sound when broken.
Use your clean hands to break chocolate bark into pieces.
Enjoy!