Jambon en croute is a traditional Luxembourgish specialty consisting of whole or sliced smoked, pre-cooked ham that is enclosed within a pastry crust before being baked. The ham is often enhanced with a mustard-based or honey coating, while the puff pastry wrapping is typically adorned with dough strips and brushed with beaten eggs for a nice, golden finish.

Some versions call for stuffing the ham with duxelles (a combination of finely chopped mushrooms, shallots, and herbs ) for even more flavor. Slices of jambon en croute are usually served hot with accompaniments such as Madeira wine sauce or Port wine sauce, potatoes, beans, rice, fresh pasta, a green salad, or braised celery.