This butternut squash and quinoa casserole is a healthy and flavorful dish that's perfect for a cozy dinner. The butternut squash is roasted until tender and then mixed with cooked quinoa, sautéed onions, and a blend of spices like cinnamon and nutmeg. The mixture is then topped with a sprinkle of Parmesan cheese and baked until golden and bubbly. The combination of sweet and savory flavors makes this casserole a delicious and satisfying meal. Serve it as a vegetarian main course or a side dish for a complete and nutritious meal.