The Croque-Chèvre is the croque-monsieur with its cheese politics rearranged. The standard version leans on Gruyère, a firm cooked cheese that melts into long elastic strands. The chèvre version replaces it with goat cheese, which behaves very differently under the broiler: a fresh chèvre softens and slumps rather than stretching, a slightly aged log browns and crusts on top, and neither produces the molten pull of an Alpine cheese. The sandwich that results is tangier, drier, and more aromatic, with the slightly barnyard note of goat's milk standing where the mellow nuttiness of Gruyère used to be.
Because chèvre does not bind a sandwich the way a melting cheese does, the Croque-Chèvre usually keeps a proper béchamel to hold the structure together, or leans on a sweet counterweight to balance the cheese's acidity. Honey is the common move, drizzled over the chèvre before the top slice goes on, sometimes with walnuts crushed in for texture or a few leaves of thyme. The ham is frequently dropped, which makes this a popular vegetarian croque, though some versions keep a thin slice of jambon cru whose saltiness plays well against the tang.
The Croque-Chèvre belongs to the family of croques defined by a single cheese swap, alongside the Croque-Bleu with its blue cheese and the Croque-Raclette with its purpose-built melter. Each is the same frame with a different dairy decision. The Croque-Monsieur tradition that holds them all together, including the béchamel technique and the codified naming, has its own article. The chèvre version's contribution is to show that the croque does not actually require a stretchy cheese: swap in one that crusts and tangs instead of pulling, adjust the sweetness to compensate, and the format still holds.