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Using It in Broil Mode
Broiling involves extremely high, direct heat — often upwards of 500°F or more. That’s way beyond parchment’s safety limit. Broiler + parchment = fire hazard.
Letting Edges Hang Over the Pan
When parchment is too big for the tray and the edges stick out, they’re more likely to curl up and touch hot surfaces.
Using It in the Toaster Oven or Air Fryer
These appliances often have heating elements very close to the food. Parchment can catch fire quickly in these tight spaces, especially when there’s not enough weight holding it down.
Confusing Wax Paper with Parchment Paper
Wax paper is not heat-resistant at all — using it in the oven is an even faster route to disaster.