1-Getting started with Italian Sub Squares: First, preheat your oven to 350°F and spray a 9×13 baking dish with cooking spray to keep things from sticking. Unroll one crescent dough sheet and press it into the bottom and up the sides of the dish, forming a 1-inch high edge for that perfect crust.

2-Layer the fillings: Layer half the provolone cheese evenly on the dough, then add the pepperoni, ham, and salami slices over the cheese for a tasty base. Top that with the roasted red bell peppers and pepperoncini, followed by the remaining provolone to seal in the flavors.

3-Assemble and bake: Place the second crescent dough sheet over the filling and pinch the edges to seal everything tightly. In a small bowl, whisk together the egg, pesto, and Parmesan cheese, then brush this mixture over the top dough layer for extra flavor and a golden finish. Cover with non-stick foil or spray regular foil and place it spray-side down, then bake covered for 30 minutes before uncovering and baking 15-20 minutes more until it’s deep golden brown.

4-Cool and serve: Let it cool for 10 minutes before cutting and serving, and feel free to adapt for dietary needs as mentioned earlier.