Yeah you're stuck with the graininess.
You are making cream cheese icing. As far as I know, you cannot introduce heat to that and expect to get anything other than a mess on your hands.
There are reasons recipes call for a certain type of sugar. It's not usually good to sub out because it isn't a direct substitution.
But as freerider said, you can make homemade powdered sugar. I've never used a food processor but I have used a blender to do it and it worked...ok. Not awesome but enough to sorta work.
Sorry! |