1. Preheat oven to 190 degrees Celsius (375 degrees Fahrenheit)
2. Combine nut flours and baking powder in a bowl, then mix in unsalted butter.
3. Add the liquid and stir in using a fork.
4. Bring the mixture together with your hand to make a firm but moist dough, then roll out thinly on a surface sprinkled with some of the extra nut flour. If mixture is too sticky, sprinkle the top with some more nut flour.
5. Cut into rounds with a 5 - 6 cm (2 to 21/2 inch) scone (cookie) cutter, and use a palette knife to lift carefully onto a lightly greased baking sheet.
6. Bake 10 to 12 minutes or until brown and firm in texture.
7. Leave to cool and harden on the sheet for a few minutes, then transfer to a wire rack to cool completely.