In a large mixing bowl, combine cheese, potatoes, green beans, and onion.
Pour red wine vinaigrette over mixture, and lightly toss to combine.
Season with salt and pepper to taste.
Tips
*Blanched Green Beans: Bring 2 quarts of water to boil in a large pot. Boil beans for 2 minutes. Immediately remove from heat, drain, and rinse under cold water until cool.
This salad is great for picnics or summer cookouts. For a splash of color, try adding cherry tomatoes, radicchio, or radishes.