Best Way to Season a Double Pie Iron?

I found a Rome cast iron double pie iron today...
I usually season CI in the oven, but can't do that with a pie iron because of the handles. I'm thinking the best way would be to season it on the grill (since I can't really build a campfire on my patio...)
Any other ideas?
And has anyone ever baked tortillas in a pie iron?

I usually season CI in the oven, but can't do that with a pie iron because of the handles. I'm thinking the best way would be to season it on the grill (since I can't really build a campfire on my patio...)
Any other ideas?
And has anyone ever baked tortillas in a pie iron?