Fried onions are the onions slices which are either pan fried or deep fried. These are one of the popular snack foods, which are also used for garnishing as well as vegetable accompaniments. These veggies can work as the great toppings for several favorite meals, such as meat loaf, stir fry, baked potatoes, tacos, salads, chili and soups. They can be kept in the fridge for three to five days. Fried onions can be kept in the resealable bag and airtight containers. They should not be left outside for longer periods so as to be protected from bacteria.