Grease and line a 20cm x 20cm baking tray with baking paper and set aside.
To make the base, place the almonds, desiccated coconut, dates and coconut oil into the Thermomix bowl and mix for 20 seconds, Speed 8, or until the mixture is fine and crumbly (scrape down the sides of the bowl partway through).
Press the mixture firmly into the prepared tin and place into the freezer.
To make the salted caramel filling, place the dates, coconut milk, coconut oil and sea salt into the Thermomix bowl and mix for 1 minute, Speed 8, or until smooth and creamy (scrape down the sides of the bowl partway through).
Pour the salted caramel filling over the base and place back into the freezer to set.
To make the chocolate topping, place the cacao powder, coconut oil and rice malt syrup into the Thermomix bowl and mix for 2 minutes, 50 degrees, Speed 2, or until melted.
Pour the chocolate topping over the slice, sprinkle with sea salt flakes (optional) and place back into the freezer to set.
Once firm, cut into slices and serve.
Keep any remaining slices in an airtight container in the freezer (as the caramel will become too soft if left out).