01 - Combine ground turkey, egg, breadcrumbs, minced garlic, grated onion, chopped parsley, oregano, salt, pepper, and Parmesan in a large bowl. Mix gently until just combined, being careful not to overwork the mixture.
02 - Form the mixture into 16 small meatballs, approximately 1 inch in diameter. Roll firmly but gently to maintain shape without compacting the meat.
03 - Heat 2 tablespoons olive oil in a large skillet over medium heat. Add meatballs in batches and brown on all sides for 6 to 8 minutes until cooked through. Alternatively, bake at 400°F on a lined baking sheet for 15 to 18 minutes, turning once halfway through cooking.
04 - While meatballs cook, heat 1 tablespoon olive oil in another large skillet over medium heat. Add minced garlic and sauté for 30 seconds until fragrant, being careful not to burn.
05 - Add spiralized zucchini to the skillet and cook, tossing gently with tongs, for 2 to 3 minutes until just tender but still retaining some crunch. Season with salt and pepper to taste.
06 - Divide zucchini noodles among four plates. Top with turkey meatballs and spoon warm marinara sauce over the top. Garnish with additional Parmesan cheese and fresh basil leaves if desired.