Our Hot Roast Beef Sandwich with caramelized onions is the BEST way to use leftover roast beef! Don't just heat up your leftovers - make them into an incredible ciabatta sandwich using remoulade sauce, cream cheese, and sweet caramelized onions.
Course Main Dish
Cuisine American
Keyword hot roast beef sandwich, hot roast beef sandwiches, pot roast sandwich, roast beef sandwich, roast beef sandwich ideas