Spaghetti Squash can be difficult to cut with a knife because of its hard outer shell. This method softens the squash in the microwave and makes it easy to cut the squash. It is then baked in the oven for easy cooking.
I have used a 1250 watt microwave. if you prefer not to use the microwave at all. Split the squash in half lengthwise, put oil,salt and pepper and bake in a 400F oven for 45 minutes to an hour,depending on the size of the squash. Always place the squash cut side down to avoid water/moisture from pooling inside the squash.