I know that cedar plank cooking is normally done on a grill but I want to see what I can do with it indoors.
What are some ways to get more of the wood flavor when cooking salmon with a cedar plank in the oven?
The big key is just to soak the plank before using it, that way it won't burn while it's in the oven. The amount of time needed to soak seems to differ among experts, but soaking for an hour should be long enough to cook the salmon without the wood burning.
Also worth mentioning is to be careful about the wood you choose. If you want to be spendy and buy actual grilling planks that's fine, but if you try to be clever and cut down wood planks on your own then make sure you avoid pressure-treated lumber. It contains some rather nasty poisonous chemicals that will evaporate at oven and grill temperatures.