I just made these using white spelt flour, and added chopped up crystallized ginger. Oh my gosh, they are divine! They held together just fine. Oh, just sooooooo good!
By the way, in response to the person who was pointing out that sugar is filtered through bone char, it is my understanding that this is only the case with cane sugar, but not with beet sugar. Sugar packaging rarely tells you which is is made out of, but you can call the manufacturer and find out. Also, there are now many brands of white cane sugar that are vegan, and marked as such on the package.