This classic Russian dish is a hearty and comforting meal that is perfect for a cold winter night. Ground beef is cooked with onions, mushrooms, and a rich sour cream sauce, then served over egg noodles. The addition of mushrooms adds a delicious earthy flavor to the dish, while the sour cream sauce provides a creamy and tangy finish. This dish is easy to make and can be on the table in under 30 minutes.