01 - Combine ground turkey, breadcrumbs, egg, Parmesan, garlic, onion, parsley, oregano, salt, pepper, and milk in a large bowl. Mix gently until just combined, taking care not to overwork the mixture.
02 - Form the mixture into 16 golf ball-sized meatballs evenly.
03 - Heat 2 tablespoons olive oil in a large skillet over medium heat. Add meatballs and brown on all sides for 5 to 7 minutes, ensuring they are not fully cooked through. Remove and set aside.
04 - In the same skillet, heat 2 tablespoons olive oil. Sauté garlic for one minute until fragrant.
05 - Stir in crushed tomatoes, basil, oregano, sugar, salt, black pepper, and optional red pepper flakes. Bring the sauce to a simmer.
06 - Nestle browned meatballs into the sauce. Cover and simmer over low heat for 20 to 25 minutes until meatballs are cooked through and sauce has thickened.
07 - Adjust seasoning to taste. Garnish with fresh basil if desired. Serve hot over pasta, zucchini noodles, or in a sandwich.