3tbsp (40g)sugar free icing sugar*,you can make your own - see note
1and 1/2 cups (180g)plain flour
2tbsp (20g)cornflour (cornstarch)
1/2cup (125ml)double (heavy) cream
12tbspsugar free jam,see link for homemade in description above
Instructions
Preheat oven to 190C/375F/gas 5.
Cream butter and icing sugar together until pale, then sift in the flours and mix until combined and no flecks of flour can be seen. Pipe this mixture into whirl shapes (using a star nozzle, pipe a circle from the outside in). Chill for 5 mins in the fridge.
Bake for 15 mins until light golden. Allow to cool completely.
Whip the cream to stiff peaks, then spoon a tablespoon of jam over of the biscuits and pipe cream on top. Top with the other biscuits.
Recipe Notes
*to make the icing sugar, blitz 3 tbsp (40g) xylitol in a coffee grinder with a small pinch of cornflour (cornstarch) until it resembles icing sugar