Mix the xylitol with the molasses to make a mock "brown sugar" (I find it easiest to do this with my hands). Add it, along with all of the other ingredients except the milk, to a food processor and blitz to combine. Turn the food processor on and add the milk a tiny bit at a time through the funnel until the mixture just starts to come together as a dough. Turn off the food processor and finish bringing the dough together with your hands. Wrap in cling film and chill in the fridge for 30 mins or the freezer for 10 mins.

Preheat the oven to 180C/350F/gas 4. Roll out the dough on a floured surface to 3mm thick (or as thin as you can without it tearing), and use cookie cutters to cut your shape (or use a knife or pizza cutter to make more traditional rectangles if you prefer). Lay out on a baking tray lined with baking paper, making sure the shapes don't touch each other (use more than one baking tray or cook in batches if need be). Bake for 15-20 mins, until a deep golden colour and starting to harden at the edges.

Allow to cool for a few mins, then transfer gently with a large spatula to a cooling rack and allow to cool completely (they will harden as they cool). If you don't mind (or prefer) them a little soft, I personally feel the best flavoured cookies are the warm ones, whether that is fresh out of the oven or warmed through slightly once cooled. :)