Fresh green beans pair with crunchy walnuts and tangy red onion in this easy salad.
- Place a steamer basket in a large pot of water, and bring to a boil.
- Add green beans and steam for about 4 minutes. Transfer to a bowl. Add the walnuts and onion to the green beans.
- In a small mixing bowl, whisk together the oil, vinegar and mustard.
- Toss the dressing with the green beans. Season with salt and pepper.