DIJON GREEN BEANS

1 1/2 pounds Green Beans fresh, trimmed
2 tablespoons Red wine vinegar
2 tablespoons olive oil
2 teaspoons Dijon mustard
1/2 teaspoon Salt
1/4 teaspoon Pepper
2 scallions, chopped
2 tablespoons Parmesan cheese grated

Place beans in a large saucepan; cover with water. Bring to a boil. Cook, uncovered, for 8-10 minutes or until crisp-tender. Meanwhile, for dressing, whisk the vinegar, oil, mustard, salt and pepper in a small bowl. Drain beans; place in a large bowl. Add scallions. Drizzle with dressing and toss to coat. Sprinkle with parmesan cheese.