Soak the breadcrumbs: In a large bowl, combine breadcrumbs and milk. Let it sit for 2–3 minutes until it forms a soft paste. This “panade” keeps the meatballs tender.
Build the mixture: Add the egg, Parmesan, garlic, parsley, oregano, red pepper flakes (if using), salt, and pepper to the bowl.
Stir until evenly combined.
Add the turkey: Gently mix in the ground turkey with your hands or a fork. Do not overwork it; stop as soon as it’s combined. The mixture should be soft and slightly sticky.
Shape the meatballs: With damp hands or a small scoop, form 18–22 meatballs, about 1 1/2 inches wide. Place them on a parchment-lined tray.
Choose your cooking method: Pan-sear then simmer: Heat 1–2 tablespoons olive oil in a large skillet over medium heat.
Brown meatballs in batches for 2–3 minutes per side (they don’t need to cook through). Transfer to a plate.
Oven-bake then simmer: Bake at 400°F (200°C) on a lightly oiled sheet for 12–14 minutes, until just set and lightly browned. This is hands-off and cleaner.
Start the marinara: In a wide pot or deep skillet, warm 2 tablespoons olive oil over medium heat.
Add the sliced garlic and red pepper flakes. Cook 30–60 seconds until fragrant, not browned.
Build the sauce: Stir in crushed tomatoes, sugar if using, oregano, salt, and black pepper. Bring to a gentle simmer.
Simmer with meatballs: Nestle the browned or baked meatballs into the sauce in a single layer.
Spoon sauce over the top. Cover loosely and simmer on low for 15–20 minutes, until meatballs are cooked through (165°F internal).
Finish the sauce: Stir in torn basil. Taste and adjust salt, pepper, or a pinch more sugar if needed.
If sauce is too thick, add a splash of water or pasta cooking water.
Serve: Toss with hot pasta or serve meatballs and sauce on top. Garnish with extra Parmesan and herbs. Add a drizzle of olive oil for shine, if you like.