Italian Sub Squares

Step 4: Add the Cheese

Place the provolone slices over the meat.

Sprinkle the shredded mozzarella evenly across the top.

The combination of provolone and mozzarella gives the squares a rich, savory flavor while also creating the stretchy, melted texture you expect from a hot Italian sandwich.

Step 5: Add the Vegetables

Scatter the sliced banana peppers, roasted red peppers, and red onion over the cheese.

Make sure the vegetables have been drained well before adding them. Excess moisture can make the dough soggy during baking.

The peppers add a slightly tangy bite, while the roasted red peppers bring sweetness and the red onion adds a mild sharpness.

Step 6: Finish With Parmesan

Sprinkle the grated Parmesan over the vegetables.

The Parmesan adds another layer of salty, nutty flavor and helps give the top of the filling a deliciously savory finish.

Step 7: Cover With the Remaining Dough

Roll out the second sheet of refrigerated dough and carefully place it over the filling.

Press the edges gently against the bottom layer of dough to seal the filling inside.

If necessary, pinch the edges together with your fingers. Try to create a reasonably tight seal around the sides so the melted cheese and juices stay inside while baking.

Step 8: Make the Italian Butter Topping

In a small bowl, combine the melted butter, Italian seasoning, garlic powder, dried parsley, red pepper flakes, and Parmesan cheese.

Stir everything together until evenly combined.

This simple topping gives the dough a golden finish and adds an extra layer of Italian-inspired flavor.

Step 9: Brush the Top

Use a pastry brush to spread the seasoned butter evenly over the top layer of dough.

Make sure you reach the edges as well as the center.

For an especially flavorful crust, sprinkle a small amount of additional Parmesan and Italian seasoning over the buttered surface.

Step 10: Bake

Place the baking dish in the preheated oven.

Bake for approximately 25–30 minutes, or until the top is puffed and deeply golden brown and the cheese inside is completely melted.

Keep an eye on the dough during the final few minutes. If the top begins browning too quickly before the center is fully heated, loosely cover the dish with aluminum foil and continue baking.

Step 11: Let It Rest

Once baked, remove the dish from the oven and let the Italian Sub Squares rest for about 10 minutes.

This short resting period is important. It allows the melted cheese to settle and makes the layers easier to cut without everything sliding apart.

Step 12: Cut and Serve

Using a sharp knife, cut the baked Italian sub into squares.

For appetizer-sized portions, cut the dish into smaller squares. For a more substantial meal, make larger pieces.

Serve them warm while the cheese is still melted and the crust is crisp and golden.

Helpful Tips for the Best Italian Sub Squares

Drain the vegetables well. Banana peppers and roasted red peppers contain moisture that can make the dough soft if too much liquid gets into the dish.

Don't overload the filling. It can be tempting to add extra meat and cheese, but keeping the layers relatively even helps the dough bake properly.

Seal the edges carefully. A good seal keeps the melted cheese from escaping and helps the squares hold their shape.

Let them rest before cutting. Cutting immediately can cause the filling to spill out. Ten minutes gives the layers enough time to firm slightly.

Customize the filling. You can add cooked bacon, capicola, mortadella, or other deli meats. For a spicier version, add hot cherry peppers or extra red pepper flakes.

Make-Ahead Option

Italian Sub Squares can be assembled several hours before baking. Cover the prepared dish tightly and refrigerate it until you're ready to bake.

When you're ready, remove the dish from the refrigerator while the oven preheats. Depending on how cold the dough and filling are, you may need to add a few extra minutes to the baking time.

For the best texture, bake them fresh rather than freezing the assembled, unbaked dough.

Serving Ideas

These squares work beautifully as an appetizer alongside other party foods. They can also be served with a simple green salad for a quick lunch or dinner.

For dipping, try serving them with marinara sauce, a creamy Italian dressing, or a mixture of olive oil and Italian herbs.

If you're serving them for a gathering, cut them into small squares and arrange them on a platter. Their handheld size makes them particularly easy for guests to grab and enjoy.

Final Thoughts

Italian Sub Squares take everything people love about a classic Italian sub and transform it into a warm, cheesy baked dish that's easy to share. Layers of ham, salami, pepperoni, provolone, mozzarella, peppers, and onions are enclosed in golden dough and finished with a flavorful Italian butter topping.

The recipe is simple enough for a weeknight meal but special enough for parties and gatherings. Once you've made the basic version, you can easily adjust the meats, cheeses, vegetables, and seasonings to create your own favorite combination.

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