This Beef and Caramelised Onion Sandwich is a delicious and satisfying meal. Tender slices of beef are paired with sweet and savory caramelised onions, all sandwiched between two slices of crusty bread. The beef is cooked to perfection, juicy and flavorful, while the onions add a rich and caramelized sweetness. This sandwich is perfect for a quick and easy lunch or dinner, and can be enjoyed hot or cold.