Do you need a special baking tray to put them on when they go in the oven? Only the last time (and the first time actually) I attempted them, they all spilled out of their little cases and I had some interesting 'biscuits' to show my unimpressed dd. She was not fooled for one minute, especially as these 'biscuits' had strange strips of paper that you had to chew round before ingesting.
Trying to be a good mother here.