Grease and flour a 9 by 13-inch pan. Preheat the oven to 350 degrees F. Melt the butter and cocoa together in a saucepan over low heat. Remove from the heat. Stir in the sugar and eggs and mix well. Add the flour, salt, vanilla, and nuts. Pour into prepared pan and bake for 30 to 35 minutes or until done.
Note: This recipe was provided by professional chefs and has been scaled down from a bulk recipe provided by a restaurant. The FN chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.