To bake spaghetti squash, preheat the oven to 400°F. Then, slice the spaghetti squash in half lengthwise and scoop out the seeds and ribbing. Drizzle the inside of the squash with olive oil and sprinkle with salt and pepper. Place the spaghetti squash cut side down on a baking sheet and use a fork to poke holes. Roast for 30 to 60 minutes, depending on the size of the squash, or until lightly browned on the outside and fork-tender on the inside. Once it’s roasted and cool enough to touch, use a fork to scrape the strands. The timing will depend on the size of your squash and the heat of your particular oven, so adjust your cooking time accordingly.