Haricots Verts Lyonnaise is a classic French side dish made with tender green beans, caramelized onions, and crispy bacon. The beans are blanched until tender-crisp, then sautéed with onions and bacon until golden and flavorful. This dish is a perfect accompaniment to any main course and adds a touch of elegance to your meal. The combination of the sweet onions, smoky bacon, and fresh green beans creates a delicious and satisfying side dish.