01 -
Preheat your oven to 180°C (350°F).
02 -
Cut the hoagie rolls into 2-inch wide portions, leaving them attached in the middle to form a loaf-like base.
03 -
In a small bowl, combine olive oil, Italian seasoning, garlic salt, and red pepper flakes if using. Brush this mixture generously onto the bread, ensuring it penetrates into the cuts.
04 -
Layer the bread with shredded mozzarella cheese, arrange pepperoni slices evenly, then sprinkle with Parmesan cheese.
05 -
Transfer the prepared bread to the oven and bake for 15-18 minutes, until the cheese is completely melted and the edges of the bread turn golden and crispy.
06 -
Remove from oven and serve immediately with marinara or pizza sauce for dipping.