Is there a word for inanimate objects that look good to eat such as a cloud that looks like ice cream or cocking that looks like frosting?
Those inanimate objects that look good to eat are only 'illusions', so far as I know; 'an illusion of edibility' or 'an appetizing illusion' would put a finer point on it, I suppose. I know of no single word for the concept you're asking about.
In the case of clouds, there are some that look like popcorn, and they're called 'popcorn clouds'.
The "Cloud Appreciation Society", avowed enemy of blue-sky thinking, presents a regular stew of clouds that look good to eat, as well as clouds that look like other things.
Delectable; delicious; yummy; kosher; succulent.