This butternut squash and quinoa casserole is a popular vegetarian recipe that is both nutritious and delicious. It is made with roasted butternut squash, quinoa, onions, garlic, and a blend of spices. The butternut squash is roasted until tender and then combined with the quinoa and spices. The casserole is then baked until it is hot and the flavors have melded together. The combination of the sweet butternut squash, the nutty quinoa, and the aromatic spices creates a flavorful and satisfying dish that is perfect for a weeknight dinner or a special occasion. Serve it as a main course with a side of green salad or as a side dish alongside roasted chicken or grilled fish.