Preheat an oven to about 180°C (fan).
Prick the potato a few times with a fork and cook in a microwave until it's cooked through. This takes about 5 minutes in my microwave, but it will also depend on the size of your potato. A knife should slide through the middle easily.
Place in the oven and leave to crisp up - about 20 minutes (I usually make my hummus while I'm waiting).
Remove the potato from the oven a leave to cool for a few minutes. Slice in half and use a spoon to scoop out most of the fluffy potato insides - leave a good thick "wall" around the outside, so the potato skin doesn't collapse.
Place the potato insides in a bowl with the hummus and dairy free spread.
Mash together until mostly smooth and then scoop it back into the potato shells. Top with grated dairy free cheese if you have some around.
Place the potato halves back in the oven for about 15 minutes, or until the cheese has melted if you're using.
Serve with a side salad (and more hummus).