Beat the coconut oil, almond butter, yacon powder, sugar and spices together until smooth and well combined.
Add the flour and currants and work in with a wooden spoon until you have a crumbly mixture.
Add the water and stir with a round-bladed knife until well combined.
Bring the mixture together with your hands to form a dough.
Roll out to 6mm thick and stamp out into 6cm rounds.
Bake in the middle of a preheated oven at 180℃ (350℉, Gas 4) for 10-12 minutes. Because of the colour, it's a bit difficult to tell when they are done, but they should still be purple rather than brown.
Sprinkle over the remaining sugar and leave to cool for a couple of minutes, then turn out onto a wire rack to cool completely.
The dough is a little crumbly, but it rolls fine if you don't mind a few cracks. It has a lovely short texture when finished.Please note: calories and other nutritional information are per serving. They're approximate and will depend on exact ingredients used.