Ingredients:
* 250g butter, softened
* 65g icing sugar (or make your own as per the instructions in the tmx book)
* 1 teaspoon vanilla extract
* 1 egg, at room temperature
* 440g plain flour
* 75g cornflour
Method:
1. mix butter, sugar and vanilla until pale and creamy. speed 4, 40-60 seconds. you might need to scrape down the bowl half way through.
2. Add egg and mix on speed 5 for 5 seconds.
3. Add flour and cornflour to butter mixture. Mix for approximately 60 seconds on the knead setting .
4. Divide in half. Press each half into a disc. Wrap each disc in baking paper. Refrigerate for 20 minutes.
5. Preheat oven to 160°C. Line 2 baking trays with baking paper. Roll each disc out between 2 sheets of baking paper to 3mm-thick.
6. Using biscuit cutters, cut dough. Place onto trays. Roll leftover dough together and repeat. Bake for 15 minutes or until light golden. Stand on trays for 5 minutes. Transfer to a wire rack to cool.
7. decorate with icing (approximately 1 cup sifted icing sugar, 1 tspn butter or marg and a tiny bit of hot water, plus drops of food colouring until you get the colour you want) and desired decorations - we used sprinkles / 100's & 1000's, some little candy hearts and silver cachous
originally posted here 
