What a good idea Skadi! I'll try adding black beans. It might add moistness and sweetness too. Sometimes I add bulgur or lentils to soy patties.
I use black beans for lots of things.
Monday I did cook Salmon. Tuesday ate out Mexican food. Last night, cooked cheeseburgers, red bean and rice, and spinach salad. Tonight since I have a snow day off and extra time, I'm cooking a brisket, mashed potaotes and gravy, green beans, and fresh strawberries.