This chicken and wild rice casserole is a comforting and hearty dish that is perfect for cooler weather. The chicken is cooked with onions, celery, and carrots, then combined with wild rice and a creamy sauce made with chicken broth and heavy cream. The casserole is topped with breadcrumbs and baked until golden and bubbly. This dish is great for feeding a crowd or for meal prep, as it can be made ahead of time and reheated throughout the week.