Sift hashish through a fine screen onto a plate.

Mash with butter into a fine, smooth puree. Let
                                     sit for 30 minutes or more.

Then gradually mix butter mixture into chocolate
                                     of the brownie mix.

Add nuts. Bake as per brownie recipe, 15 minutes at
                                      400 degrees F. or until a toothpick can be poked into
                                     and out of brownie without sticking to it.

Cool, then cut with a wet knife.