Spread the French Fried onions a baking sheet, lightly toast at 375 degrees Fahrenheit for about 5-10 minutes, or until golden and crispy. If using fresh green beans, blanch the the trimmed beans in boiling water for about 1 to 2 minutes. Shock the beans an ice-water bath, and then dry them completely. If using frozen green beans, defrost the beans in cool water and then dry completely.
Add the beans to a bowl with about ¾ cup of the french fried onions, and the remaining ingredients. Toss to coat. Chill until ready to serve*. Top with the remaining toasted onions just before serving.
*The french fried onions that you mix in will get soggy after a while. It’s best to make this dish just before serving, or hold off on adding the onions, and stir them in at the last minute.