Slow Cooker Swiss Steak is a comforting and flavorful dish made with tender beef, tomatoes, onions, and bell peppers. The beef is first seared to lock in the juices, then slow-cooked with the vegetables and a savory tomato-based sauce. The result is a melt-in-your-mouth steak that is rich in flavor and perfect for a hearty meal. Serve this delicious Swiss steak over mashed potatoes or rice for a complete and satisfying dinner.