Pizzz Casserole

Prepare a 9×13'' casserole dish with cooking spray. Preheat oven to 375 Fahrenheit. Move your oven rack 1 up from the middle rack position.
Cook pasta: Bring a large pot of water to a boil. Add dry pasta. Boil pasta for 2 minutes less than the suggested directions. Drain pasta in a strainer and return to the pot.
Assemble casserole. To the cooked pasta, stir in the marinara sauce and seasoning. Add about half of pepperoni and half of the shredded cheese. You will need about 35 pepperonis for the topping.
Once mixed, pour mixture to the 9×13 dish and smooth out with a spatula. Top with the remaining mozzarella and pepperoni.
Bake: Bake uncovered for 20 minutes. If desired, broil for the last 2-3 minutes to let the pepperoni crisp and brown the cheese.
Serve: Allow to cool for 5 minutes before serving, warm. Sprinkle the top with Parmesan cheese or red pepper flakes if desired.