In a double boiler, melt chocolate and coconut oil until combined into a creamy chocolate paste. Let it cool down for a few minutes until the coconut mouse will be ready.
Transfer the thick hard coconut cream to a bowl and discard all of the liquid left in the cans.
Beat coconut cream using a hand mixer (or whisk) until thick and creamy (about 1-2 minutes).
Fold the cacao powder through the cream and beat (or whisk) again until well combined and thick.
Pour melted chocolate paste over coconut mouse and slowly incorporate. Note the chocolate paste should be at room temperature by now and liquid.
To assemble the jars, layer fresh raspberries and coconut mousse until jars are filled-up. Decorate with more fresh raspberries on top.
Place in the fridge for 2-4 hours to set. Leaving the pudding to set overnight is a great option since its texture will develop even further.
Done! Serve fresh or store in the fridge for up to a week.