This one-pan wonder delivers the deep, slow-cooked flavor of a Sunday supper on a busy weeknight schedule. Tender, herby turkey meatballs simmer in a rich marinara sauce built on a foundation of sweet, sautéed onions for maximum comfort with minimal cleanup.
Do not overmix the meatball mixture to avoid toughness. Brown meatballs in batches if needed to prevent steaming. The sautéed onion is key for flavor depth. Leftovers store well in the fridge for 3-4 days or freeze for up to 3 months.