Using an electric mixer, beat cream cheese until light and fluffy, about 1 minute.
Crumble blue cheese into bowl and add, sour cream, 3 tablespoons parsley, green onions, lemon juice, and pepper. Mix together on low speed until uniform.
Form cheese mixture into a ball and wrap tightly in parchment paper. Chill for at least 1 hour.
While the cheese mixture is chilling, toast the nuts. Bake at 350 degrees on a baking sheet until browned, about 10 minutes.
Once nuts have cooled, roughly chop them and mix with the remaining 2 tablespoons parsley.
Unwrap the ball, reshape if desired, and roll in the chopped nuts and parsley until evenly coated.
Serve at room temp with your favorite crackers!