Pollen sub mixed with hard candy can work almost as well as soft patties. The store bought patties contain mostly pollen sub powder and a bit of HFCS to hold it all together. Hard candy with pollen sub will be mostly sugar and some pollen sub. If you are making hard blocks, use the onion bag instead. However, this time of year and through the winter, do not give the bees additional pollen or sub. There should be plenty of natural pollen available right now and in the winter, adding solids to their diet is not advised. They will need to excrete it and since it will be cold, it may happen inside of the hive. Feed only sugar through the winter.
Finally, I don't advise most beekeepers to use pollen/sub patties at all. Most beekeepers use them for the wrong reason or at the wrong time and are wasting their money on them. Have a valid well thought out reason for using them. Using them because you read it was a good idea or the other beeks are using them is not a good reason. I only use them for newly created hives with a minimal work force or when there is a total lack of natural pollen available. In my area we have a total lack of nectar and pollen forage from early August to late Sept. every year. They are know to cause major problems in areas with small hive beetles.