I already know that it is forbidden to make a bracha on a stolen lulav (SA OC 649:1). However, i'm not sure if this also applies to making a bracha on stolen food. The difference seems to be that by a lulav, the bracha is on the mitzvah, which is being done with something forbidden. By food, the bracha is on your benefit (ברכת הנהנין), so it's possible that you might make a bracha on benefiting, even if it came to you in a non-permissible way.
So: should a bracha be made on stolen food?