Put the first list of ingredients in a bowl and mix together with your hands. Line a freezer container with baking paper and press down firmly to form the base of the slice.

Use the 1½ cups of filtered water to soak the dates for at least an hour. Place the dates with the water, the cashews, maple, cacao butter and coconut oil in a high power blender. Blend until it becomes nice and smooth. You can add more liquid if needed, and you will need to stop and stir the ingredients when they get caught. Add the cacao powder and continue blending until the mix is smooth and glossy. Spread evenly on top of the base. Sprinkle with desiccated coconut and place in the freezer to set.