What food is often put with ham inside warm croissants in the United States? Cheese. Ham-and-cheese croissants are a familiar savory variation in American bakeries, cafés, hotel breakfasts, and brunch menus. The filling is usually tucked into a sliced or partially assembled croissant and warmed until the cheese softens and the pastry becomes crisp again.
The pairing works because croissants provide buttery, layered pastry while ham contributes salt and savory flavor. Common cheeses include Swiss, cheddar, provolone, and Gruyère, although recipes vary widely. Some versions add mustard, eggs, spinach, or vegetables, turning the pastry into a portable breakfast sandwich.
This is not the standard French presentation of a croissant. In France, croissants are commonly sold plain, while filled versions may use almond paste or other sweet ingredients. The American savory style is one example of how the pastry has been adapted internationally. A related mix-up is pain au jambon, a ham-filled pastry or sandwich-style preparation, which is not identical to every American ham-and-cheese croissant.