Prepare six medium-sized slices of bread, all the same shape. Toast them to a good golden color and lay them on a dish. Cover each toast with a very thin slice of lean, cooked ham; spread a little mustard over ; then cover with a layer of garnishing a la proven-cale (No. 642), dredge grated Parmesan cheese on top, and strew a little fresh bread-crumbs over all. Place them in the hot oven and bake for ten minutes ; remove, dress them on a hot dish with a folded napkin, and send to the table.