Baked Meatball Subs

Name: Baked Meatball Subs
Prep time: 25 min
Cook time: 35 min
Total time: 1 h
Yield: 6 servings
Cuisine: Italian
Ingredients: ½ cup (30 g) panko breadcrumbs; ⅓ cup (80 ml) whole milk; 1½ lb (680 g) ground beef, 80/20, cold from the refrigerator; 1 whole (50 g) large egg, lightly beaten; ¼ cup (60 g) yellow onion, grated on the large holes of a box grater, juices included; 3 cloves (9 g) garlic cloves, finely minced; ½ cup (50 g) Parmesan cheese, finely grated; 2 tbsp (8 g) fresh flat-leaf parsley, finely chopped; 1 tsp (1 g) dried oregano; 1½ tsp (6 g) kosher salt; ½ tsp (1 g) black pepper, freshly ground; 3 cups (720 ml) marinara sauce, good-quality jarred or homemade (about 24 oz); 6 rolls (660 g) hoagie rolls, about 8 inches (20 cm) long, split lengthwise, leaving one long side attached like a hinge (about 110 g per roll); 1 tbsp (15 ml) extra-virgin olive oil; 8 oz (225 g) low-moisture mozzarella, thinly sliced or coarsely shredded; 2 tbsp (12 g) Parmesan cheese, finely grated; 6 leaves (3 g) fresh basil leaves, torn (optional)

From the MyKitchenBank Kitchen

Tender, parmesan-flecked beef meatballs are baked (no pan-frying splatter), simmered in marinara, then tucked into toasted hoagie rolls and blanketed with melted mozzarella. A classic Italian-American sandwich that is easy to make for a crowd.

Prep: 25 min
Cook: 35 min
Wait: 5 min
Total: 1 hr 5 min
Makes: 6 subs (18 meatballs, 3 per sub)

Jump to recipe ♡ Save

Ingredients

6 servings

For the meatballs
½ cup (30 g) panko breadcrumbs
⅓ cup (80 ml) whole milk
1½ lb (680 g) ground beef, 80/20, cold from the refrigerator
1 whole (50 g) large egg, lightly beaten
¼ cup (60 g) yellow onion, grated on the large holes of a box grater, juices included
3 cloves (9 g) garlic cloves, finely minced
½ cup (50 g) Parmesan cheese, finely grated
2 tbsp (8 g) fresh flat-leaf parsley, finely chopped
1 tsp (1 g) dried oregano
1½ tsp (6 g) kosher salt
½ tsp (1 g) black pepper, freshly ground
For the subs
3 cups (720 ml) marinara sauce, good-quality jarred or homemade (about 24 oz)
6 rolls (660 g) hoagie rolls, about 8 inches (20 cm) long, split lengthwise, leaving one long side attached like a hinge (about 110 g per roll)
1 tbsp (15 ml) extra-virgin olive oil
8 oz (225 g) low-moisture mozzarella, thinly sliced or coarsely shredded
2 tbsp (12 g) Parmesan cheese, finely grated
6 leaves (3 g) fresh basil leaves, torn (optional)

Equipment (7)

Large rimmed baking sheet (18×13-inch / 46×33 cm), lined with parchment paper
Second rimmed baking sheet for the subs, or reuse the first lined with fresh parchment
Large mixing bowl
Box grater
Medium (3-quart / 3 L) saucepan or deep skillet with lid
Instant-read thermometer
Pastry brush

Steps

Before you start

Position an oven rack in the center and preheat the oven to 425°F (220°C) before you start mixing.
Use 80/20 ground beef; leaner beef makes drier, denser meatballs.
Slice or shred the mozzarella from a block of low-moisture mozzarella; fresh mozzarella releases too much water and makes soggy subs.
Choose sturdy 8-inch (20 cm) hoagie rolls (about 110 g each) that can hold sauce without falling apart.

1
Soak the panadeOven 425°F / 220°C
- Preheat the oven to 425°F (220°C) and line a large rimmed baking sheet with parchment.
- In a large mixing bowl, stir the panko and milk together and let it sit for 5 minutes, stirring once, so the crumbs absorb the milk.
- Use this time to grate the onion, mince the garlic, chop the parsley, and grate the Parmesan.
+ Show details− Hide details
Ready when: Panko looks like a thick, moist paste with no dry crumbs
Tip: Grate the onion rather than chopping it so it melts into the meat and doesn't leave crunchy pieces.
2
Mix the meatballs
- Add the egg, grated onion with its juices, garlic, ½ cup Parmesan, parsley, oregano, salt, and pepper to the soaked panko and stir to combine.
- Add the cold ground beef.
- Using your hands, gently fold and press the mixture together for about 30 seconds, just until the seasonings are evenly distributed.
+ Show details− Hide details
Ready when: No streaks of egg or pockets of panko remain, and the mixture looks cohesive but not pasty
Tip: Overmixing makes tough, rubbery meatballs. Stop as soon as everything is evenly combined.
3
Shape the meatballs
- Wet your hands lightly with water to prevent sticking.
- Portion the mixture into 18 equal balls, about 2 tablespoons (roughly 50 g) each and 1½ inches (4 cm) wide.
- Roll each gently between your palms, then place on the lined baking sheet about 1 inch (2.5 cm) apart.
+ Show details− Hide details
Ready when: 18 evenly sized, smooth balls on the sheet
Tip: Roll with light pressure; packing them tightly makes them dense.
4
Bake the meatballsOven 425°F / 220°C
- Bake on the center rack at 425°F (220°C) for 16–18 minutes, until the tops and edges are deeply browned and a thermometer inserted into the center of a meatball reads 160°F (71°C).
- No pink should remain in the middle.
+ Show details− Hide details
Ready when: Deep golden-brown outside and 160°F (71°C) in the center
Tip: Leave the oven on at 425°F (220°C); you'll use it again for the rolls and the final melt.
5
Simmer in marinara
- While the meatballs bake, pour the marinara into a medium saucepan and warm over medium-low heat.
- When the meatballs come out of the oven, transfer them to the sauce with a spoon, cover, and simmer gently for 10 minutes, turning once or twice, so they absorb flavor and the sauce thickens slightly.
+ Show details− Hide details
Ready when: Sauce is steaming with small bubbles at the edges and the meatballs are hot throughout
Tip: Keep the heat low; a hard boil can break up the meatballs and scorch the sauce.
6
Toast the rollsOven 425°F / 220°C
- Line a baking sheet with fresh parchment.
- Open the rolls and lay them cut-side up.
- Brush the cut surfaces lightly with the olive oil.
- Toast in the 425°F (220°C) oven for 3 minutes, until the edges are pale golden and the surface feels dry and crisp.
+ Show details− Hide details
Ready when: Cut sides are lightly golden and feel dry
Tip: Do this while the meatballs simmer. Watch closely; the rolls burn quickly.
7
Fill the subs
- Return the toasted rolls to the sheet, cut-side up.
- Spoon about 2 tablespoons of sauce into each roll, then nestle 3 meatballs in each.
- Spoon another 2–3 tablespoons of sauce over the meatballs, then top each with about 1⅓ oz (37 g) mozzarella, overlapping the slices so the cheese covers the meatballs and reaches the edges of the roll.
+ Show details− Hide details
Ready when: Each roll holds 3 meatballs covered with sauce and cheese
Tip: Don't overload with sauce; excess will soak through the bottom of the roll. Serve extra sauce on the side.
8
Melt the cheeseOven 425°F / 220°C
- Sprinkle the 2 tablespoons Parmesan over the subs.
- Bake at 425°F (220°C) for 5–6 minutes, until the mozzarella is fully melted and bubbling with a few browned spots.
- For extra color, switch to the broiler for the last 30–60 seconds, watching constantly.
+ Show details− Hide details
Ready when: Mozzarella is melted, bubbling, and lightly speckled with brown
Tip: If broiling, don't walk away; cheese goes from browned to burnt in seconds.
9
Rest and serve
- Remove the subs from the oven and let them rest for 2 minutes so the cheese sets slightly and the sandwiches are easier to handle.
- Scatter with torn basil and serve hot with any remaining warm sauce for dipping.
+ Show details− Hide details
Ready when: Cheese is no longer runny but still soft and stretchy

Good to know

Tips

Baking the meatballs on parchment keeps cleanup minimal and gives even browning without pan-frying.
Use a scoop or a kitchen scale to portion meatballs so they all cook at the same rate.
Toasting the cut sides of the rolls creates a barrier that keeps the sandwiches from getting soggy.
For a spicier sub, add ¼ teaspoon red pepper flakes to the meatball mixture.

Make ahead

Shape the raw meatballs up to 24 hours ahead, cover, and refrigerate on the lined sheet. Or bake and simmer the meatballs in sauce up to 3 days ahead; reheat gently on the stove, then toast the rolls and assemble and bake the subs just before serving.

Storage & reheating

Store leftover meatballs and sauce separately from the rolls in an airtight container in the refrigerator for up to 4 days. Assembled subs are best eaten right away and should not sit at room temperature beyond 2 hours. Freeze cooked meatballs in sauce for up to 3 months; thaw overnight in the refrigerator. Reheat in a covered saucepan over medium-low heat until steaming hot (165°F / 74°C), then assemble with fresh toasted rolls and cheese.

Substitutions

ground beef, 80/20 → Half ground beef and half ground pork, or a beef/pork/veal blend. Pork adds richness and tenderness; keep the total weight at 1½ lb (680 g).
panko breadcrumbs → Fresh or plain dry breadcrumbs. Use the same amount of dry breadcrumbs; the soaking time stays the same.
low-moisture mozzarella → Provolone slices. Provolone gives a sharper flavor and melts well; use the same weight.
whole milk → Water or low-sodium beef broth. Use the same amount; meatballs will be slightly less rich.