Preheat the oven: Turn on your oven to 375°F (190°C). Cover a baking sheet with parchment paper.
Combination Ingredients: In a big bowl, mix together the remaining stuffing, cooked turkey, Parmesan cheese, parsley, beaten egg, thyme, sage, garlic powder, and black pepper. Stir thoroughly until all ingredients are mixed evenly.
Make Balls: Shape the mixture into small balls, about 1 inch in size, using your hands or a cookie scoop. Roll the balls in flour to cover them lightly.
Baking: Put the stuffing balls on the baking sheet. Cook in the oven for 15-20 minutes, or until it is golden brown and crispy on the outside.
Serve: Allow the stuffing balls to cool a bit before serving. Eat them hot as a starter or side dish!
Enjoy your leftover turkey stuffing balls as a delicious way to use up your holiday leftovers!