Microwave the spinach for about 3 minutes until heated through but not steaming hot.
In a large bowl, whisk together milk, Greek salad dressing, oregano, salt, and pepper. Stir in Panko bread crumbs, cooked spinach, and feta cheese until well combined.
Add ground turkey to the mixture and stir until combined.
Use a cookie scoop to form the mixture into meatballs.
Cook the meatballs in the air fryer at 375 degrees F (190 C) for about 14 minutes, until the center reaches 165 degrees F (74 C).
Serve hot and enjoy.
Notes
Nutrition information is an estimate, calculated automatically. Values vary with brands, substitutions and portion sizes.