Preheat your oven to 400°F (204° C).Optional step: To soften the flesh slightly and make it easier to cut, microwave the spaghetti squash for about 2 minutes, then allow it to cool.
Cut the squash in half. Cut from stem to base (longways) for shorter noodles and along the middle (like a belt) for long noodles. Use a spoon to scrape out the seeds.
Drizzle the flesh with oil and season lightly with salt and pepper. Lay the pieces cut side down on a baking sheet.
Set the baking sheet in the oven. Roast for 28-40 minutes, until soft and cooked through to your desired tenderness. Cook time may vary based on the size of your squash, so adjust accordingly.
Video
Notes
To store: Store covered with plastic wrap or in an airtight container in the refrigerator for 3-4 days, per USDA.To freeze: Transfer the squash mixture to a gallon sized plastic freezer bag. Squeeze all of the air out of the bag, seal, and freeze for up to two months.