Wash the dates well, pour hot water over them and let them steep for about 15 minutes. Add the walnuts and use a hand blender to make a cream. Add oat flakes, cocoa and coconut milk and mix everything to a cream.
Fill hot glasses with it. The recipe makes about 3 smaller jam jars full. Let them cool down and store in the fridge for up to a week (they go away much faster with me).