Smarties Cookies

350g plain flour
1 tsp bicarbonate of soda1 tsp baking powder
250g butter, softened
300g sugar
1 egg
1 tsp vanilla
1 bag Smarties

Beat the butter and sugar together, add the egg and vanilla, mix well. Sift in the flour, bicarbonate of soda and baking soda, mix well to form a dough. Roll the dough into 30 balls, place onto prepared baking trays and flatten slightly, allow plenty of room between the cookies as they expand a lot. Push in Smarties and bake for 15 minutes at 180 degrees centigrade. Allow to cool for 2 minutes before transferring to a cooling rack.