Dijon Green Beans | Food Stuff

Ingredients

• 2 teaspoons Dijon mustard
• 1 cup grape tomatoes, halved
• 1-1/2 pounds fresh green beans, trimmed
• 2 tablespoons olive oil
• 2 tablespoons grated Parmesan cheese
• 1/4 teaspoon pepper
• 1/2 small red onion, sliced
• 2 tablespoons red wine vinegar
• 1/2 teaspoon salt