Step 6: Add the Remaining Ham, Salami, and Provolone
Layer the remaining ham over the peppers.
Add the remaining salami and finish with the remaining provolone cheese.
The cheese near the top melts into the layers below and helps hold everything together when the squares are sliced.
Step 7: Add the Top Crescent Crust
Unroll the second can of crescent-roll dough.
Lay it carefully over the filling and gently stretch it to cover as much of the surface as possible.
Press the seams together and seal the edges where you can.
Do not worry if the top is not absolutely perfect. The dough will puff and expand while baking.
Step 8: Brush With Olive Oil and Parmesan
Brush the top of the crescent dough evenly with olive oil.
Sprinkle the grated Parmesan cheese over the surface.
This creates a flavorful, lightly crisp top crust with a beautiful golden finish.
Step 9: Bake Until Golden
Bake in the preheated oven for approximately 25 to 30 minutes.
The exact time may vary depending on your oven and the thickness of the layers.
The squares are ready when the top crust is golden brown and the cheese inside is hot and melted.
Step 10: Let the Dish Rest
Remove the baking dish from the oven and let it rest for about 10 minutes before cutting.
This resting period is important because the melted cheese and hot filling need a few minutes to settle.
If you cut immediately, the layers may slide apart.
Step 11: Cut Into Squares
Use a sharp knife to cut the baked sub into 12 squares.
Serve warm, or allow them to cool further if you are taking them to a gathering.
What to Serve With Italian Sub Squares
These squares are hearty enough to serve on their own, but they pair beautifully with lighter sides.
- Simple green salad
- Minestrone soup
- Garlic bread
- Antipasto platter
- Olives
- Marinated vegetables
- Fresh tomato salad
- Coleslaw
Serve Them Like a Real Italian Sub
One of the easiest ways to make the squares feel even more like traditional sandwiches is to serve fresh toppings on the side.
Set out:
- Shredded lettuce
- Fresh tomato slices
- Extra banana peppers
- Thinly sliced red onion
- Black olives
- Italian dressing
- Mayonnaise
- Mustard
Guests can add whichever toppings they prefer after the squares have been baked.
Why Fresh Lettuce and Tomato Should Be Added After Baking
Lettuce and tomato contain a lot of moisture.
If baked inside the casserole, lettuce wilts heavily and tomatoes can release liquid that softens the crust.
Serving them fresh on the side provides the crisp texture and bright flavor associated with a deli-style sub.
Variation: Simple Ham and Cheese
If you are cooking for children or picky eaters, keep the filling very simple.
Use crescent dough, ham, and provolone or mozzarella.
Leave the peppers and stronger meats on the side so everyone can customize their serving.
Variation: Extra-Spicy Italian Sub Squares
For more heat, add sliced hot cherry peppers or extra banana peppers.
You can also sprinkle a small amount of crushed red pepper flakes over the filling before adding the top crust.
Variation: Olive Lover’s Version
Add sliced black or green olives between the layers.
Make sure they are well drained first.
Variation: Turkey Italian Squares
Replace the ham with sliced turkey for a slightly milder version.
You can still keep the salami and pepperoni for classic Italian flavor.
Variation: Meat Lover’s Version
Add another layer of your favorite Italian deli meat, such as capicola or mortadella.
Keep the slices relatively thin so the filling does not become excessively thick.
The real secret to serving these neatly is not another ingredient—it is giving the baked squares enough time to rest before slicing.
