For Homemade Meatballs:

1 pound ground beef (95% lean)

½ cup panko breadcrumbs

1 large egg

1–2 garlic cloves, minced

1 tablespoon Italian seasoning

½ teaspoon red pepper flakes

½ teaspoon salt

For Meatball Subs:

24 meatballs (homemade or frozen)

2 tablespoons olive oil

2 cups marinara sauce

8 hot dog buns

1 ½ cups shredded mozzarella cheese

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Prepare the Meatballs: In a large bowl, gently mix ground beef, panko breadcrumbs, egg, minced garlic, Italian seasoning, red pepper flakes, and salt until combined. Shape into 24 equal meatballs.
Cook the Meatballs: Heat olive oil in a skillet over medium heat. Brown meatballs on all sides (6-8 minutes). Alternatively, bake at 400°F for 15-20 minutes until cooked through.
Simmer in Sauce: Add marinara sauce to skillet, simmer meatballs for 10 minutes to soak in flavors.
Assemble the Subs: Preheat oven to 375°F. Slice buns lengthwise, place 3 meatballs per bun, spoon sauce over, and sprinkle with mozzarella.
Melt the Cheese: Bake assembled subs for 8-10 minutes until cheese is melted and bubbly.
Serve Hot: Remove from oven and enjoy immediately.

Use turkey or chicken ground meat for a lighter option.

Substitute mozzarella with provolone or cheddar for variety.

Add sautéed peppers and onions for extra flavor and texture.

Adjust red pepper flakes for more or less heat.

Store leftovers refrigerated up to 3 days; reheat in oven for best texture.

Freeze meatballs separately for best quality, then assemble fresh.