I used unsweetened baker's chocolate and added a bit of liquid sweetener. Mine came out crumbly as well, but I think it is because I over cooked it. I checked at 45 minutes, I think. Next time I will check at 20-25 and go from there.

Even though mine is crumbly it is still VERY good and has a nice texture when you bite into it. Can't wait till what I have is gone so I can try again!!!

I am thankful for this recipe!!!