1potato per personred, yellow, brown, or any variety
2 to 3teaspoonsall purpose spice rubor seasonings of choice: salt, pepper, paprika, garlic & onion powders, cayenne, etc.
Wash and cut the potatoes in about 1/4" slices lengthwise. Try to make the slices all the same width for even cooking.*
Lay the planks in one layer on a cookie sheet and brush one side with a little olive oil. Sprinkle with seasonings, turn and repeat on the other side with the oil and spices.
Heat your grill on high.
Turn the heat to low while adding the potatoes to the grill in a single layer, then turn the heat up, close the lid and grill about 3-5 minutes (or until the potatoes have grill marks). Turn and grill 3-5 more minutes before checking each potato and removing any cooked planks to the warming level.
Continue cooking until all potato planks are cooked through.
*Don't use the ends - cut a little off first since the ends never made very good planks, they tend to fall into the grate or get charred before the others are done.