Seared steak stuck to cast iron pan??

[Bumppo]

I use 400 , but that's a classic method to get even heating on cast iron .

Definitely another thing that's key.

Not sure why people always say that cast iron heats evenly. They will in the oven, but Definitely not on a burner.

 

[Dive Bar Casanova]

Hot pan, then cold oil = no stick.
Let the pan heat up first.