In … Using a fork, scrape the squash to get long, spaghetti-like strands. Discard the seeds in the center. Sprinkle on the pine nuts and fresh basil. Cook, stirring until the spinach wilts, 3 to 4 minutes. Divide the spaghetti squash among 4 plates and top with the sautéed spinach and tomatoes. Let squash cool for 10 minutes. Preheat oven to 375°F Pierce squash with a fork and bake for approximately 60 minutes cut in half and in water. DIRECTIONS.