According to most sources, its origin is more or less yolked (pun intended) with the croque monsieur, which originated in a Paris cafe in 1910 and was mentioned by name in Marcel Proust's 1918 ...

C’est à l’occasion de la sortie du livre "On va déguster Paris" de François-Régis ... de la cuisine bistrotière locale : le croque-monsieur. Pain de mie, fromage, jambon, un régal ...

MADAME CROQUE MONSIEUR est un concept novateur de vente sur place et à emporter, basé sur un produit simple et populaire : le croque-monsieur. Si on le rencontre dans le monde entier, il demeure ...

Was there food, too, and if so, worth getting? The menu is blissfully uncomplicated and full of Parisian café staples: croque monsieur, green bean salad, ham-and-cheese baguette sandwiches ...