Doing something, like seeing, eating or any other action, with a pastry, when you are dreaming, represents the act of indulging or gratifying a desire. Pastry can have symbolic meaning of arousing gratification of the senses and physical pleasure, especially sexual pleasure. You are enjoying your life with sensual pleasures. And you experiencing satisfaction while reaping your rewards.
Read more about dreaming of Pastry in other dream meanings interpretations.