Onion bonda is a popular South Indian snack made with a crispy and flavorful batter. It is made by deep-frying onion slices coated in a spiced chickpea flour batter. The onions become soft and caramelized on the inside while the batter turns golden and crispy on the outside. Onion bonda is usually served with coconut chutney or tomato ketchup and makes for a delicious tea-time snack or appetizer.