I noticed that at approx half way point the sauce was reduced and thick, so at this point I added a second cup of water. However all slow cookers can vary in heat so if yours does not reduce you may not need the second cup of water. If in doubt add it, you can always thicken at the end )

This produced a thick, almost fluffy (for lack of a better word),satay sauce that was not spicy and was suitable for children and adults alike.