Microwave spaghetti squash for 3 to 5 minutes, to make it soft enough to cut it.
Carefully cut in half lengthwise using a towel to hold the squash.
Scoop out seeds. It's important to do that now, as they are harder to separate out once baked.
Brush olive oil or butter over spaghetti squash.
Put into baking dish open squash side down.
Roast for 30 minutes at 400 degrees F. or until it's easy to shred squash into tendrils with a fork.
Remove spaghetti squash and allow to cool.
Use the fork to shred the squash.