Meatballs, marinara, melted provolone on a toasted sub. This Italian-American high calorie lunch never disappoints and never gets old.
Preheat the oven to 425°F. Line a baking sheet with foil and brush lightly with 1 tbsp olive oil for even browning.
In a large bowl, gently mix ground beef, ground pork, eggs, breadcrumbs, milk, grated parmesan, minced garlic, parsley, oregano, 1 tsp salt, and 0.5 tsp pepper. Do not overwork to keep meatballs tender.
Shape mixture into 16 even meatballs and arrange on prepared baking sheet. Drizzle with remaining olive oil and bake for 18-20 minutes until browned and cooked through, turning once halfway for even color.
Warm marinara sauce in a large skillet over medium-low heat. Transfer baked meatballs to the sauce and simmer gently for 8 minutes, occasionally spooning sauce over meatballs to keep them moist.
Slice sub rolls lengthwise without cutting through. Toast open-faced under broiler until edges are golden. Layer 4 meatballs with sauce onto each roll, top with 2 provolone slices per sandwich, and broil 1–2 minutes until cheese is bubbling. Serve immediately.