This creamy beef and green chili casserole is a comforting and flavorful dish that is perfect for a family dinner. Tender beef is cooked with onions, garlic, and green chilies, then combined with a creamy sauce made from sour cream and cheese. The casserole is topped with a crispy breadcrumb and cheese topping and baked until golden and bubbly. Serve this delicious casserole with a side of rice or tortillas for a complete meal.