Green Beans and Red Onion with Warm Mustard Vinaigrette

Ingredients

• 0.3 teaspoon pepper black
• 2 tablespoons dijon mustard 
• 1 tablespoon olive oil extravirgin
• 1.5 pounds green beans trimmed
• 1 cup onion red vertically sliced
• 3 tablespoons red wine vinegar 
• 0.3 teaspoon salt 

Equipment

• bowl
• sauce pan
• whisk

Directions

1. Cook green beans in boiling water for 6 minutes or until crisp-tender, and drain.
2. Combine the green beans and onion in a large bowl.
3. Heat a small saucepan over medium heat.
4. Add vinegar, Dijon mustard, olive oil, salt, and black pepper; cook over medium heat 30 seconds or until thoroughly heated, stirring vinaigrette constantly with a whisk.
5. Drizzle vinaigrette over bean mixture; toss well to coat.
6. Serve immediately.