Wash and cut the celery stalks into 3-inch pieces, removing any tough strings.

In a medium skillet, brown the ground beef until fully cooked. Drain excess fat and let cool slightly.

In a mixing bowl, combine the softened cream cheese, sharp cheddar cheese, ranch seasoning, and cooked beef until smooth.

Spoon or pipe the cream cheese mixture evenly into the hollow of each celery stick.

Garnish with finely chopped scallions and chill for 30 minutes before serving.