Green Beans with Parmesan, Basil, and Balsamic Vinegar
Soak onion in water to take the edge off.
Boil green beans in lightly salted water for 6-9 minutes, depending on age. Cool the beans in ice water.
Place the green beans, red onion, and chopped basil in a large bowl. Sprinkle in the olive oil, toss to coat. Sprinkle in the balsamic and Parmesan cheese. Toss to combine. Season to taste with salt and freshly ground black pepper.