This recipe combines the sweetness of mashed sweet potatoes with savory sausages and a rich red onion gravy. The sweet potatoes are boiled until tender and then mashed with butter and cream for a creamy and flavorful side dish. The sausages are cooked until browned and served on top of the sweet potato mash. The red onion gravy is made by caramelizing red onions and then simmering them with beef stock and red wine for a rich and flavorful sauce. This dish is perfect for a comforting and hearty meal.