Mix cocoa and powdered sugar in large bowl. In large saucepan, melt
the cheese and butter over medium-low heat. Stir continually until
dissolved. Don't cook too long or it will begin to scorch and lump
on the bottom of the pan. Add vanilla and stir to mix. Pour into
cocoa and powdered sugar mixture. Add choppped nuts if desired. Mix
thoroughly with a large, heavy spoon. Pour into square pans, two or
more. Chill and cut into squares. If possible, use a non-stick
saucepan so the cheese won't stick. Also, you will need an extra
large bowl as this makes over 6 lb of candy. I would recommend
making a half batch the first time as it will be much easier to
handle.
