For cilantro-lime crema, combine all ingredients. Whisk until well blended. Set aside or refrigerate until ready to serve.
For black bean cakes, preheat flat-top griddle to 350 F. Coat with oil.
In a food processor, puree half of the black beans. Process until smooth.
In a mixing bowl, combine all ingredients. Mix until well blended.
Portion bean mixture into 4 1/2 oz. patties.
Cook patties 4 minutes. Turn patties over. Cook until internal temperature reaches 160 F, 4 to 5 minutes.
Serve on top of mixed greens and alongside cilantro-lime crema for dipping.*