In a mixing bowl, combine the softened cream cheese, shredded cheddar cheese, chopped chipped beef, green onions, mayonnaise, Worcestershire sauce, garlic powder, and onion powder.
Mix all the ingredients together until well combined and smooth.
Shape the cheese mixture into a ball and wrap it in plastic wrap. Refrigerate for at least 2 hours to firm up.
Once chilled, remove the cheeseball from the refrigerator and roll it in the chopped pecans or walnuts until fully coated.
Transfer the cheeseball to a serving platter and serve with crackers or vegetable sticks.
Notes
You can substitute the chopped pecans or walnuts with your favorite nuts.