Turn your oven down to the lowest possible setting, typically 170 degrees Fahrenheit, and then simply place the box in the oven. The low heat creates an oven-like climate in the pizza box. In addition, the box will not catch fire unless the oven is set to over 400 degrees!
Make sure the box does not contain any metal pins or plastic parts. Preheat your oven to a temperature between 240°F and 350°F for 5 to 10 minutes. Once the temperature is high enough, reduce the temperature to about 200°F and place in the pizza box with the pizza.
The safest temperature for heating is 170℉–250℉. You can leave the box in the oven for about 10-15 minutes, just make sure to check every few minutes. Be careful when removing from the oven as the cardboard will get hot.
If you decide to keep your pizza warm in the cardboard box in the oven, you should never set your oven above 200°F. The recommended range is 150-200°F maximum. We also recommend that you do not leave your pizza in the oven at this temperature for too long. 10-15 minutes should be your goal.
Danger of self-ignition. Cardboard can catch fire when it reaches that very specific temperature of 427 degrees. Most pizzas bake at or above 425 degrees. This two degree brim is a little too tight for comfort.
Cardboard has a much higher flash point than paper due to its excellent heat absorbing properties. In fact, the auto-ignition temperature for cardboard is 800 degrees Fahrenheit – a significant increase from 481 degrees Fahrenheit!
In the oven
There are two ways to keep your pizza warm in the oven: In the box: don’t panic! Pizza boxes only catch fire when they reach over 400 degrees. For this method, set your oven to its lowest setting and, still in its box, place your pizza on the center rack.
The fact is that cardboard can ignite at temperatures up to 175 degrees Fahrenheit so it’s best to avoid this altogether and use another material like aluminum foil. Now you know the answer to the question “can you put cardboard in the oven?” The answer is no, because it could easily catch fire.
While it may be tempting (and even practical) to bake your pizza in your pizza box, it’s just not safe to put cardboard in the oven. Cardboard may catch fire at temperatures above 400 F for prolonged periods.
Long story short, the safest option is to not put a box in the oven. Even at the lowest temperature of your oven, there is a possibility of spontaneous combustion or fire when cardboard is placed in the oven.
These are things that can be quite unhealthy to heat and will likely change the flavor of your pizza. It’s not an ideal method of reheating your pizza in the box, but it will reheat your pizza at a low temperature (e.g.>.
Without a doubt, reheating pizza in the oven is the easiest way to bring it back to life. Preheat the oven to an approximate temperature of about 375 degrees and put a baking sheet in the oven to get nice and hot. If desired, you can line the baking sheet with aluminum foil for easy cleaning, but this is not necessary.
If you put your cardboard pizza inside, it shouldn’t be in for more than 30 minutes, even when the oven is off. For the aluminum foil and the pizza stone, the pizza is often not left in the oven for too long. That’s because they can retain heat even after you get out.
Preheat and bake at 400°F. Keep pizzas frozen while preheating. Take pizzas out of cardboard, cling film and cardboard. Place the pizzas directly on the oven racks – one on the second rack from the top and the other on the second rack from the bottom of the oven.