Preheat the oven to 400°F
Wash the spaghetti squash
Cut the squash in half lengthwise
Scoop out the seeds
Brush the cut sides with oil
Sprinkle with salt if desired
Place the halves cut-side down on a baking sheet
Bake for 35 to 45 minutes
Check for doneness by piercing the skin with a fork
Remove from the oven
Let it cool for a few minutes
Scrape the flesh with a fork to form strands