I use the choc one but i guess you could do it with any... Anyway!!!
Make your shake up with 2 sweetners and make it really thick... i use approx 2 fl oz of water i think... but just play about with it until u get it right!!! Just as thick as you can but without it all sticking to your whisk lol....
Then i put 2 tablesoons of your mixture onto greaseproof paper on a small plate.... spread it out cookie shaped and then microwave on full for 30 secs/open the door/30 secs and carry on!!!
It kind of cooks from the outside and eventually will all be hard after 2/3 mins!!!
My shake usually makes 3 or 4!!! I take them to work!!!
They're not amazing but its just nice to have something to chew!!!