In a medium bowl, beat the softened cream cheese until smooth.
Add the shredded cheddar cheese, 0.5 cup chopped pecans, green onions, Worcestershire sauce, garlic powder, salt, and pepper. Mix well until everything is combined.
Shape the cheese mixture into a ball.
If using the coating, spread the 0.5 cup chopped pecans and chopped parsley on a plate or shallow dish.
Roll the cheese ball in the pecan and parsley mixture until evenly coated.
Wrap the cheese ball tightly in plastic wrap and refrigerate for at least 1 hour to firm up.
Serve with crackers, pretzels, or vegetable sticks.
Notes
This cheese ball can be made up to 2 days in advance and kept refrigerated.