DwHJ, here you go:
Nigella's Butter Cut Out Biscuits
175g soft unsalted butter
200g caster sugar
2 large eggs
1 teaspoon vanilla extract
400g plain flour, pref Italian 00, plus more if needed
1 teaspoon baking powder
1 teaspoon salt
300g icing sugar, sieved, and food coloring
Biscuit cutters
Preheat oven to 180c. Cream the butter & sugar together until pale & moving towards mousiness, then beat in the eggs and vanilla. In another bowl, combine the flour, baking powder & salt. Add the dry ingredients to the butter and eggs, and mix gently but surely. If you think the finished mixture is too sticky to be rolled out, add more flour but do so sparingly as too much will make the dough tough. Halve the dough, form into fat discs, wrap each half in plastic wrap & rest in the fridge for at least an hour. Sprinkle a suitable surface with flour, place a disc of dough on it (not taking out the other half until finished with the first) and sprinkle a little more flour on top of that. Then roll it out to about ½ cm thickness. Cut into shapes, dipping the cutter into flour as you go, and place the biscuits a little apart on baking trays lined with baking paper.
Bake for 8-2 minutes, by which time they will be lightly golden around the edges. Cool on a rack and continue with the rest of the dough. When they?re all fully cooled, you can get on with the icing. Put a couple of tablespoon of just not boiling water into a large bowl, add the icing sugar & mix together, adding more water as needed to form a thick paste. Color as desired. Makes 50-60.