1. Preheat the oven at 170ºC. Place a piece of baking paper onto your oven tray so the dough doesn't stick and your tray doesn't get all greasy. 2. Sift the flour, custard powder and icing sugar into a bowl.
3. Now for the messy part! Add the margarine into the bowl, and rub it through the flour, custard powder and icing sugar (with your fingers) until it forms a stiff dough.
4. Roll the dough into balls and place them on the oven tray. Use a fork to flatten the balls and give them that cool lined effect. This recipe makes about 24 small biscuits (or 12 Yo-Yos once they're paired), but you can make them as big as you like. Why not make 6 massive ones?
5. Put the dough balls into the oven and bake them at 170ºC, for approximately 15 minutes or until they turn a pale tan colour.
6. Transfer the biscuits to a cake cooling rack.
It'll take a little while for the biscuits to cool but once they do, you can make a lovely sweet icing and join the pairs together.
To make the icing, you'll need:
½ cup (90g) icing sugar
2 tablespoons (40g) butter (you can use margarine instead if you wish, but there'll be a slightly different consistency)
4 drops of vanilla essence
2 teaspoons (10mL) water (if you need to make the icing a bit more runnier)