I can count the amount of times I've purchased flank steak on one hand--it's a cut of meat that I seldom buy, because it tends to be rather pricey. I happened to find a piece marked down at the grocery store last night, so I thought I'd treat my husband and I to one of my favorite recipes from growing up! My Mom used to make this flank steak for special occasions--mostly for my Dad's birthday, as it was one of his favorites. It's so very simple to do and the marinade only calls for three ingredients. The hardest part is having to patiently wait 24 hrs to let it marinate before being able to cook it!
Mix all marinade ingredients well in a shallow dish. Place meat in dish and turn to coat meat evenly. Marinate meat at least 24 hours, turning every 4-6 hours. Grill meat until cooked as desired and serve with sliced mushrooms. (Make sure you slice against the grain!)
NOTE: You would be surprised at how far that amount of flank steak goes--it doesn't seem like a lot, but 2 lbs should easily serve a family of 4-5. Also, I used a grill pan and cooked my steak on my stovetop. I grilled the meat approximately 4-5 minutes on each side for medium rare. My husband NEVER ate steak prepared anything less than "well done", but after the first time I convinced him to try medium rare, he was sold! I owe it to my Dad for convincing me that meat tastes so much more flavorful when it's prepared this way!