Flank Steak with broth

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 1/2 teaspoon salt 1/4 teaspoon black pepper 1 (1-pound) flank steak, trimmed Cooking spray[...]

2 medium red onions , sliced 1 large red bell pepper , 1/4-inch strips 1 large green bell pepper , 1/4-inch strips 1 cup tomato juice 1 teaspoon lemon peel ,[...]