Place the almonds into the Thermomix bowl and Turbo Pulse them several times to break them up. Transfer them to a separate bowl with the sultanas.
Add the chocolate to the Thermomix bowl and grate for 10 sec/speed 9. Scrape down the sides of the mixing bowl and melt for 2 min/50°C/speed 2. Scrape down the bowl and along the bottom with a spatula and melt again for 1 min/50°C/speed 2 until thoroughly melted.
Pour the melted chocolate onto a baking sheet lined with baking paper and gently spread it evenly with the back of a spoon. It needs to be about 4-5mm thick. Scatter over the sultanas and almonds.
Transfer the bark to the fridge to set. Once set, cut the chocolate into shards with a kitchen knife.
Notes
Storage: Store the chocolate bark in the fridge or cool pantry.