In small bowl, stir together onion,
mayonnaise, sour cream and horseradish.
Arrange 1 lettuce leaf in center of each wrap;
spread about 3 tablespoons mayonnaise
mixture over lettuce in each wrap. Evenly
layer corned beef over sauce on bottom
two-thirds of each wrap. Place 2 slices of
cheese over corned beef, if using, and spread
2 tablespoons barbeque sauce over cheese in
Starting from bottom of each
wrap, tightly roll wrap around filling. Cut each
wrap diagonally in half to serve.