French fried onions

French's is the producer of canned "french fried onions".  The product dates back to 1933 but became a household food in the 1950's when a marketing campaign suggested that the onions be a topper for a green bean casserole. Available at most grocery stores.

If you don't have French Fried Onions you can substitute (for a topping) dried bread crumbs mixed with butter
OR> Crushed potato chips

6oz can french fried onions = 3 cups / 2.8-oz can = 1 3/8 cups