I am returning to this thread, which I read when searching for the same answer, to pass on the (thankfully) positive solution I found. I spent 8hours one weekend last month looking for it.
The answer is yes, but at the time of writing you need a specific blu ray burner with Toast.
I bought this burner, along with Toast, at OWC (aka macsales):
http://eshop.macsales.com/item/Other World Computing/MRF8BDSD12X/
I used this howto at OWC:
http://eshop.macsales.com/articles/howto-burn-bluray-toast
Btw, I am a film maker who needed to burn a Blu-ray from my Macbook Pro for a cinema screening of a short film. The Blu-rays I burnt were better quality than a duplication house I used before. For the record, OWC's customer service is excellent.