I generally liven these up by throwing some diced jalapenos and a few drops of hot sauce in 'em. They're a big hit, even with my spoiled, spoiled children.
1 can of black beans, drained and mashed beyond recognition
1 cup cooked brown rice
1 small onion, really finely chopped
1 egg, lightly beaten
2 tbsp + 1 cup salsa, divided
1/4 cup sour cream (low fat is fine)
In a large bowl, mix your mashed beans, rice, onion, and the 2 tbsp of salsa. Mix it together and rop by 1/2 cups onto a well-greased skillet. Flatten each burger until they're 1/2" thick. Cook over medium heat for 4 or 5 minutes per side or until it looks cooked.
In a bowl, mix together the rest of the sour cream and the salsa. Serve the burgers on buns with the sour-cream/salsa stuff, some lettuce and a slice of cheese, if you like.
Makes 4 burgers.