Sauté the chopped onion, garlic, and jalapeno until softened, about 1-2 minutes.
Add black beans (including liquid), green chiles, cumin, chili powder, and cayenne. Stir to combine.
Bring to a simmer, and cook for about 10 minutes.
Remove from heat.
Stir in the cilantro and add juice from ½ of a lime.
Add salt and pepper to taste.
Garnish with freshly crumbled Cotija cheese and chopped cilantro.
