Start with spreading the Maille Dijon Originale Mustard, then top with lettuce, a few slices of roast beef, and finish off with some pickled red onions.
Notes
You can substitute the pickled red onions for freshly sliced red onions, or caramleized onions.You can use sliced turkey, ham, or chicken if preferred in place of the roast beef.Any nice crusty bread will work, enjoy this sandwich with your favorite bread.