Follow these simple steps to create your Italian Sub Squares:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Pan: Unroll the crescent roll dough and cover the bottom of a greased 13×9 inch baking dish, pressing to eliminate seams.
3. Layer the Meats: Evenly layer the sliced deli meats over the dough.
4. Add Cheese: Place the sliced cheese on top of the meats.
5. Add Vegetables: Top the cheese with the shredded lettuce, tomato slices, and black olives if desired.
6. Season: Drizzle the Italian dressing evenly over the vegetables. Then sprinkle the Italian seasoning on top, followed by the grated Parmesan cheese.
7. Top with Dough: Cover the filling with another layer of crescent roll dough, pressing the seams to seal.
8. Bake: Place the baking dish in the preheated oven and bake for about 30 minutes or until the dough is golden brown.
9. Cool and Slice: Once done, remove from the oven. Allow to cool for about 10-15 minutes before slicing into squares.
10. Chill: For best flavor, it’s recommended to chill the squares in the refrigerator for at least one hour before serving, allowing the flavors to meld.