Balsamic Flank Steak And Mushrooms - cooking recipe

Ingredients

1/4 cup balsamic vinegar
2 tablespoons soy sauce
1 tablespoon granulated sugar
2 lbs flank steaks
2 tablespoons extra virgin olive oil
1 onion, chopped
2 garlic cloves, minced
1 lb shiitake mushroom, sliced
1 lb button mushroom, sliced
1 tablespoon chopped fresh parsley

Preparation

In a large plastic bag, combine vingegar, soy sauce and sugar; add steak.
Seal and refrigerate for 8 hours.
Remove from marinade, reserving the marinade (used the reserved half if you doubled the marinade recipe).
In skillet, heat oil over medium-high heat, cook onion, garlic, stirring, until transluscent, 3 minutes.
Add mushrooms; cook until liquid is evaporated, about 10 minutes.
Add reserved marinade; cook until no liquid remains, about 5 minutes.
Meanwhile, broil steak, or grill over medium-high heat, for 7-9 minutes per side for medium rare.
Transfer to cutting board. Tent with foil; let stand for 10 minutes.
Slice thinly across the grain.
Serve with mushroom mixture; sprinkle with parsley.