Line a mini cupcake pan with mini cupcake paper cases. Alternatively, use regular-size cupcake paper cases in a regular muffin pan. Set aside.
Prepare a double boiler by placing a heat-proof mixing bowl over a small/medium-sized pot of simmering water.
Add the broken-up chocolate block to the mixing bowl and gently melt over low-medium heat until completely melted together and smooth.
Once melted, stir through peanut butter (if using) until well combined and melted through the chocolate.
Turn off the heat and remove the bowl from the pot.
Stir through the coconut until well combined.
Add rice bubbles and mix until completely coated in the melted chocolate.
Spoon mixture into cupcake cases, filling them up tall or with desired your amount.
Place in refrigerator for 1 hour or until completely set.
Serve and enjoy!
Notes
Store: Place your chocolate crackles in an airtight container and keep them refrigerated for up to 1 week.
Freeze: After allowing the chocolate crackles to set in the fridge, wrap each individually in plastic wrap. Arrange them in a freezer-friendly container, using baking paper between layers. They can be frozen for up to 3 months.
Thaw: To enjoy from frozen, simply place the chocolate crackles at room temperature on your kitchen counter until fully thawed.