For this sandwich, I arranged a black bean (store-bought) patty, a slice of provolone cheese, lettuce mix, and honey mustard in whole wheat sandwich thins (I've been feeling this bread lately).
If I had had more vegetables on hand, I would have added them, too. I think cucumber and tomatoes would have been just right. We've also added grilled pineapple slices and teriyaki sauce to our black bean sandwiches.
** I am attempting to make 52 sandwiches. Read more about how this project got started here. See all the sandwiches I've made so far here.**