To pre-bake spaghetti squash, simply cut a whole spaghetti squash in half {carefully so you don't lose a finger}, scoop out the seeds and rub the inside with olive oil. Sprinkle with sea salt and place cut side down on a foil-lined baking pan in a 400 degree oven. Cook for about 20-30 minutes depending on the size of the squash. {It should be knife-tender when cooked through.} Alternatively, serve over a baked sweet potato, rice or quinoa.