In a bowl combine turkey, garlic, egg, breadcrumbs, Parmesan, 1 tsp. salt and 1/4 tsp pepper. Using 1 Tbsp. for each, roll mixture into balls.
In a large pot, heat oil over medium. Cook onion, stirring occasionally, until softened, 3-4 minutes. Add broth and tomatoes; bring to a simmer. Add meatballs; cook, without stirring, until meatballs float to surface, about 5 minutes.
Add kale, cook until wilted and meatballs are cooked through, about 5 minutes more. Thin soup with water if desired. Season with salt and pepper. Serve soup with more Parmesan. Enjoy!