Preheat the oven to 180° / gas 4. Line 2 baking trays with baking paper and set aside.
Add the flour, sugar, almonds and baking powder in a large bowl and whisk together, if it goes really crumbly, then together with your hands until it forms a ball.
Turn the dough out on to a floured surface and roll out. Top tip: if the dough sticks to the rolling pin, sprinkle some flour over the rolling pin.
Cut out rounds with a cookie cutter, re-rolling the trimmings until all used up. Place the biscuits onto the baking paper and bake for 15-20mins until golden.
Sprinkle with icing sugar and leave to cool on a wire rack.