Swiss and Onion Casserole is a comforting and flavorful dish that combines the richness of Swiss cheese with the sweetness of caramelized onions. This casserole is made with layers of bread, Swiss cheese, and onions, all baked together until golden and bubbly. It's a perfect side dish for a family dinner or a potluck gathering. The creamy and cheesy texture of the casserole pairs well with roasted meats or a fresh salad.