Gather all ingredients to ensure a smooth preparation process. Cut the smoked salmon into small pieces and finely chop the green onions and walnuts.
In a large mixing bowl, combine the softened cream cheese, shredded cheddar cheese, lemon juice, minced dill, garlic powder, Old Bay seasoning, salt, and pepper. Use a hand mixer or fork to blend until creamy and well combined.
Gently fold in the smoked salmon and finely chopped green onions, ensuring they are evenly distributed throughout the cheese mixture.
Lay a large piece of plastic wrap on your countertop. Spoon the mixture onto the center of the wrap, and use the wrap to shape the mixture into a ball. Twist the ends of the plastic wrap to secure the shape and refrigerate for at least 2 hours, or until firm.
Once firm, unwrap the cheese ball and roll it in the finely chopped walnuts until fully coated. This adds a delightful crunch and enhances the presentation.
Transfer the cheese ball to a serving platter. Pair it with an assortment of crackers, sliced vegetables, or even pancakes for a unique twist. Enjoy the delightful blend of flavors!