Broiled Flank Steak with Red Onion Marmalade is an easy a fast dinner dish. It's a great weeknight dinner or company dish! Flank steak with a sweet/sour red onion marmalade is an excellent recipe! I don't know if you knew this about me or not...but I cook a lot. And in cooking a lot, there are not a lot of dishes that I make more than once or twice. I just don't have that ...