Preheat your oven to 400F
Thinly slice your onion.
On a 12x17” baking pan, lay down some parchment paper.
Add your layer of Parmesan cheese.
Add a layer of your onion and drizzle with olive oil.
Add your seasonings.
Finish with pepperoni slices and mozzarella cheese.
Bake for 18-20min or until crispy.
Serve with a side of ranch dressing and enjoy!
