Preheat oven to 400°F and line a sheet pan with parchment paper.
In a bowl, combine ground turkey, chopped spinach, breadcrumbs, beaten egg, Parmesan, garlic, onion powder, oregano, salt, and pepper. Mix gently until just combined.
Roll mixture into tablespoon-sized meatballs and place evenly on the prepared sheet pan.
Bake for 20 to 25 minutes until meatballs are cooked through and golden brown on the outside.
Let meatballs rest for 5 minutes before serving. Pair with your favorite sauce or sides.
Notes
Freeze leftovers for up to two months and reheat from frozen.
Serve with marinara sauce, pesto, or a lemon butter sauce.
Use gluten-free breadcrumbs to make this gluten-free friendly.