Crispy onions are slices of onions that are either pan fried or deep fried — and consumed as a popular snack food, garnish, or vegetable accompaniment to various recipes. Crisp fried onions are also used in biriyani for layering and garnishing.
This type of prepared onions in a manner similar to that of French fried potatoes. Crispy deep fried onions are called "French fried onions" in Southern cooking of the United States. Smaller and irregularly shaped (from being deep-fried until they are crunchy) onions are an integral part of the American dish green bean casserole. Freshly made crisp fried onions may be used as garnishes in some restaurants.