French onion dip is a delicious and versatile party food that can be used for dipping pretzels, chips, or vegetables. It's also great as a spread on sandwiches or as a base for dips and sauces. French onion dip is made with onions, mayonnaise, sour cream, and seasonings. The onions are cooked until they're soft and caramelized, then combined with the other ingredients. The result is a rich and creamy dip that's perfect for any gathering!