Combine cheeses, mayonnaise, Worcestershire sauce, celery salt and onion powder.
Shape into a ball; roll in dried beef and then in parsley.
Refrigerate. Serve with crackers of choice.
Nutrition Info Per Serving (cheese ball only): Calories 376.7 Total Fat 32.9 g Saturated Fat 17.2 g Polyunsaturated Fat 0.9 g Monounsaturated Fat 7.3 g Cholesterol 94.0 mg Sodium 764.6 mg Potassium 116.9 mg Total Carbohydrate 2.1 g Dietary Fiber 0.0 g Sugars 1.4 g Protein 19.1 g