One interpretation when you dream about pastry is that you have the potential to fulfil an ambition of yours because you are constantly coming up with fresh ideas. These prove to others, particularly in a working environment, that you are valuable to your superiors and the company you work for. Your ideas may admittedly be unconventional or eccentric but at least you're thinking outside the box.
Pastry can also signify indulgence, pleasure and satisfaction- perhaps you are enjoying life to the fullest right now and the rewards it's bringing if you are in a comfortable financial, personal and professional position.
If you saw a pastry in your dream but didn't eat it, this may show that you are patient in your waking life and are willing to wait for things rather than jump in right way. It's possible you like to weigh out all your options before going ahead with something.
Source: The Complete A-Z Dictionary of Dreams by Ian Wallace
Tagged in Dream Interpretation