Pour some boiling water on the dates in a small bow, and let soften. Drain then mash to make a paste.
Thoroughly mix the remaining cake ingredients with the date paste in a large bowl.
Transfer the mixture to a lined springform cake pan or muffin pan and place in the fridge to set while you make the frosting. When filling muffin liners, leave some space for the frosting.
To make the frosting:
Place all the frosting ingredients in a high speed blender and blend until smooth.
You have two options here – either place the frosting in the fridge until it is thick enough to spread on to your cake, or pour onto the cake and let set all together in the fridge.
Garnish the cake with a dusting of cinnamon or nutmeg. If you have a dehydrator, shape the mixture into mini cakes or 1 large cake and dehydrate at 115 degrees F for 8-12 hours before adding the frosting.