Slice spaghetti squash into 1" thick rings. Scrape out seeds and pulp, then place the rings on a parchment-lined sheet pan.
Brush each side with olive oil and season to taste with salt and pepper.
Bake 35-40 minutes or until tender.
Scrape with a fork to pull out the spaghetti-like strands.
Notes
Spaghetti squash can also be made by cutting it in half the long way, scaping out the seeds and pulp, and baking with the cut side down. In this case, you will likely need to increase the cooking time.
Spaghetti squash seeds can be roasted until lightly browned and enjoyed as a snack.