I have some of this icing in my freezer right now. I had it on the counter for a few days and then moved it to my fridge. Pulled it out and iced a cupcake and then threw the rest in the freezer. I'm thinking it will not spoil, but I will probably have to whip it good in my mixer when I'm ready to use it again. I can't answer about melting in the heat, because I haven't had it in heat. I use an all butter version.
5/16/12 at 6:05am