Recipes: Grilled steak and mushroom salad

Preparation:    Preparation time: 20 mins Cooking time: 10 mins Serving: 6 Ingredients: 6 tablespoons olive oil, divided 2 tablespoons Dijon mustard, divided 1/2 teaspoon salt 1/4 teaspoon pepper 1 beef top sirloin steak (1-1/2 pounds) 1 pound sliced fresh mushrooms 1/4 cup red wine vinegar 1 medium bunch romaine, torn Instructions: In...