Fried onions are thinly sliced onions that are cooked in oil or butter until they become golden brown and crispy. This cooking process enhances their natural sweetness and adds a crunchy texture, making them a popular topping for various dishes. They are often used in recipes like casseroles, burgers, and salads, providing both flavor and visual appeal. These crispy onions can be made at home or purchased pre-packaged from stores. They are commonly found in many cuisines around the world, including American and Indian dishes. Fried onions are also a key ingredient in French onion soup and are often used as a garnish for green bean casserole.