What is the Purpose of the Round Cardboard in Your Frozen Pizza Box?

Frozen pizza box hacks from Carolina A.M.

Frozen pizza box hacks for your Thursday Tips.  Did you know there is a purpose to the round cardboard that is packaged with your frozen pizza?  Turns out, it helps keep the pizza from sliding around in the box during transport and you can use it to transfer the pizza directly into your oven. Use that same round cardboard piece to slide your cooked pizza onto it.  To save dishes and your cooking sheets from getting scratched, then place it back onto the cardboard box it came in, slice and serve.