Be patient with this step to achieve an even mix.
Beat butter, sugar, brown sugar and vanilla extract slowly until creamy.
Mix eggs one at a time and allow mix to absorb them.
SLOWLY (about 1/2 cup at a time, sprinkling over mixing bowl) add flour/cocoa mixture and allow mixer to beat well.
Once creamy, STIR in nuts and morsels alternating about 2 TBSP at a time to allow even distribution.