Spaghetti squash gratin combines the nutritional benefits of spaghetti squash with the comforting allure of a cheesy gratin. This dish is baked to golden perfection, layered with a rich, creamy sauce and topped with a delightfully crunchy breadcrumb topping. It offers a lighter alternative to traditional pasta dishes while still providing the satisfaction of a baked casserole. Perfect for a quick dinner or a side dish, it reheats beautifully and pairs well with a simple green salad or roasted vegetables to make a complete, balanced meal.