01 -
Preheat oven to 400°F and grease a 9x13 inch baking dish.
02 -
Spread a thin layer of pasta sauce onto the bottom of the dish and top with 1/3 of the pepperoni.
03 -
Layer half of the frozen tater tots, half of the remaining pasta sauce, half of the mozzarella cheese, and another 1/3 of the pepperoni.
04 -
Repeat the layers, ending with the last of the pepperoni on top. Sprinkle grated parmesan cheese if desired.
05 -
Cover the dish with foil and bake on the center oven rack for 20 minutes.
06 -
Remove the foil and bake for an additional 15 minutes or until the top layer of tater tots is golden brown and the pepperoni is crispy.
07 -
Let the casserole cool for about 5 minutes before serving. Serve alone or with red pepper flakes, parsley, Italian seasoning, or ranch dressing as desired.