Try this Sneaky Meatball Subs recipe, or contribute your own.
Melted fresh mozzarella blankets bubbling marinara over tender poultry meatballs nestled inside toasted bread. Meatball sub sandwiches originated in Italian-American immigrant communities in the early twentieth century, adapting traditional Sunday gravy and meat dishes into portable lunch counter fare. Ground turkey presents a distinct challenge in these adaptations because lean poultry lacks the natural rendering fat of beef or pork, resulting in dry textures if handled incorrectly. Incorporating finely grated raw zucchini and onion directly into the turkey mixture introduces internal moisture that evaporates during the cook, keeping the protein tender without altering the savory profile. Pulsing these vegetables through a food processor before combining prevents large chunks from disrupting the structural integrity of the formed spheres. Placing the shaped meatballs on an elevated wire rack set inside a foil-lined baking sheet at 400 degrees allows hot air to circulate freely beneath the meat, avoiding the steaming effect that occurs when raw portions touch solid metal. Broiling the assembled sandwiches requires careful supervision, as fresh mozzarella releases surface water rapidly once exposed to direct radiant heat. Batch-cooking surplus meatballs on a sheet pan before transferring them to a freezer container provides a rapid protein source for future meals requiring only twenty minutes of reheating at 350 degrees.