½ cup of Balsamic Vinegar
3 tbsp olive oil
3 cloves garlic, minced
salt and freshly ground black pepper to taste
2 medium sized red onions, cut into ½ inch wedges
1 flank steak, about 2lbs
1 cup red wine, your choice
First: In a saucepan mix together all liquid ingredients over medium heat. Reduce to ½ and reserve.
Two: Salt and pepper the flank steak; dice garlic and rub down. Pan sear over high heat in an iron skillet. Cover with red onions and bake at 350° oven for approximately 45 minutes.