The bars are best kept in the refrigerator, although it's by no means essential. They soften in the heat but don't disintegrate. Any other cereal crumbs can be combined with cornflakes to make up the 3 cups. It's a good way to use up those otherwise annoying scraps. If too much powdery stuff goes in, the bars can be somewhat dense.
Dessicated coconut is best, as shredded coconut is too course.
Contributor Peter C. Maxwell Dept. of Comp.