These were just an experiment made quickly with what was on-hand in the food processor--but a great success served on whole wheat buns with guacamole! You can easily modify to suit your own preferences. I added one chipotle from a can of chipotles-in-adobo sauce. In case you're wondering what to do with the rest of that can: I separate a few chiles with some sauce into tiny plastic containers (you know those ones you never use?) and keep them in the freezer until needed. Just a minute in the microwave dethaws! Note that the cornmeal is the main binder/thickener for this recipe--add it a bit at a time, and don't be afraid to add a few tablespoons more if your burger mix is still a bit runny. I've found that leaving a bean burger mix alone to absorb moisture for a few minutes can also be helpful before trying to form patties.