The icing recipe that you cook the flour and milk until thick, cool, then whip it up with crisco and sugar. Do you think that it needs refrigerated? I like this recipe for fillings and now I'm unsure about the refrigeration. What do you think?

I am not saying this is right, but I usually leave cakes filled with this "Twinkie" filling on the counter and nobody in my home has ever gotten sick.

I've left mine out too but. . . this is for a graduation cake next Saturday for someone else and I don't want anyone to get sick. Thanks for your reply.