This butternut squash and quinoa casserole is a nutritious and delicious option for a vegetarian meal. The butternut squash is roasted until caramelized and then combined with cooked quinoa, spinach, and feta cheese. The flavors are enhanced with a touch of garlic and herbs, creating a flavorful and satisfying dish. Baked until golden and bubbly, this casserole is a perfect choice for a cozy dinner.