A croque monsieur is a hot sandwich made with ham and cheese. The name comes from the French words croque ("crunch") and monsieur ("gentleman").

A sandwich is a food typically consisting of vegetables, sliced cheese or meat, placed on or between slices of bread, or more generally any dish wherein bread serves as a container or wrapper for another food type. The sandwich began as a portable, convenient finger food in the Western world, though over time it has become prevalent worldwide.