Grab a small bowl and add your water, sprinkle your gelatin on top and set aside to allow it to 'bloom' for a few minutes.
In a small saucepan add the butter, tahini, honey & cinnamon and stir over a low heat to combine.
Once that mixture has combined, add in the gelatin mix and stir again until it's completely combined then remove from heat.
Pour the puffed rice into a large bowl then pour warmed mixture over the top. Stir well to ensure it's completely mixed through. Pour into a baking paper lined tray, press down firmly and place in the fridge to set for at least 4 hours before slicing.
If you want a crunchier bar you can bake before placing in the fridge on 180C for 20-30 mins until browned on edges. Allow to cool before placing in the fridge to set before slicing.