01 - In a large bowl, gently combine ground turkey, egg, breadcrumbs, Parmesan, parsley, garlic, oregano, salt, pepper, and milk. Avoid overmixing.
02 - Shape mixture into 16 evenly sized meatballs (approximately 1.5 tablespoons each).
03 - Heat 2 tablespoons olive oil in a large skillet over medium heat. Brown meatballs on all sides, about 5 to 7 minutes, then remove and set aside.
04 - In the same skillet, add 1 tablespoon olive oil. Sauté onion over medium heat until softened, about 4 minutes. Add garlic and cook for 1 minute.
05 - Stir in crushed tomatoes, basil, oregano, sugar, salt, and optional chili flakes. Bring to a simmer.
06 - Return browned meatballs to skillet, nestle into sauce, cover and simmer over low heat for 20 minutes until cooked through.
07 - Garnish with fresh basil and serve hot alongside pasta, rice, or crusty bread.