Yes, but I don’t recommend it. It’s tricky to reuse a cooking wood plank. First of all, it’s important to make sure that you use the same plank for the same type of meat. So if you’re making salmon on the wood plank, use that wood plank only for salmon next time. Same goes for other proteins and vegetables. Of course, make sure that the wood is not charred too much and can be reused. Clean a used wood plank with a clean soft scrub sponge and hot water only, no soap. Wipe it with a towel, dry it, and store in the freezer.