Sift cocoa and sugar together in large mixing bowl.

Melt butter and cheese non-stick pan, over medium-low heat, stirring constantly.

Add vanilla and nuts (if desired) to the butter/cheese mixture.

Mix the sugar with cocoa and add butter mixture.

Stir until well combined and smooth (this is the hard part)

Press into two 13 X 9 inch pans

Allow to cool and cut into bite-sized squares.Store in air-tight container.