Preheat the oven to 400 degrees F. Line a baking sheet with parchment paper.
In a large bowl, combine the ground turkey, fennel, apple, and seasonings. Mix until well combined.
Roll into 12 meatballs, and place on the baking sheet. You may also choose to roll smaller meatballs to serve a bigger crowd. In this case, you may need to keep a closer eye on them in the oven and decrease the cooking time as needed.
Bake for 16 to 18 minutes or until meatballs are baked through. Enjoy with a dip of your choice, such as tomato sauce!
*To grate the fennel, choose a tough piece of the bulb for best results.