Break the chocolate into rough squares and place them in a heatproof glass bowl.
Melt the chocolate either in the microwave or by placing the bowl over a saucepan of simmering water and stirring. Stop just before the chocolate has completely melted.
Line a 10 x 10 inch ( 25 x 25cm) oven dish or tray with greaseproof parchment paper.
Pour the melted chocolate into the oven dish and smooth it out with a spatula or knife until it’s an even, thin layer.
Sprinkle on your chosen sprinkles. Kids will love to help with this bit. We used popping candy toppers, silver balls and colourful stars.
Scatter on your salt crystals evenly.
Leave your chocolate bark out to set, which will take a few hours, or pop it in the fridge for an hour until solid.
When it’s ready, lift it off the greaseproof paper and break it apart into rough pieces with your hands. And that’s it! It’s ready to serve. Enjoy your crackling treat.