01 -
Set the oven to 190°C and allow it to fully preheat.
02 -
In a large bowl, thoroughly mix the ground meat, bread crumbs, Parmesan, egg, minced garlic, Italian seasoning, salt, and black pepper until uniform.
03 -
Form the mixture into meatballs measuring approximately 2.5–4 cm in diameter. Arrange them evenly on a parchment-lined baking tray.
04 -
Transfer the tray to the oven and bake for 20 minutes, or until the meatballs are golden and cooked through.
05 -
While the meatballs bake, gently heat the marinara sauce in a saucepan over low heat until hot.
06 -
Place baked meatballs in a casserole dish and pour over the warmed marinara sauce. Mix gently to coat all meatballs evenly.
07 -
Scatter the hoagie roll pieces evenly over the sauced meatballs to replicate the sub experience.
08 -
Evenly distribute the shredded mozzarella cheese across the top.
09 -
Return the dish to the oven and bake for 15 to 20 minutes, or until the cheese is bubbling and golden brown.
10 -
Allow the casserole to rest for a few minutes, then garnish with fresh basil or parsley before serving.