To dream that you’re enjoying a snack indicates anticipation of small pleasures in your waking life.
To be hungry and in search of a snack implies that you may be about to look at different avenues for satisfy yourself, such as a new hobby.
Dreaming of feeling guilty for indulging in a sweet snack could be a message from your unconscious to avoid an extramarital flirtation or affair.
[1]An insufficient amount; see “food”
[2]