
Add oil to a medium-sized pot over medium heat.
Once oil is shimmering, add onion and stir frequently until softened (about 5 minutes).
Add garlic and cook, stirring constantly, until fragrant, about 30 seconds.
Sprinkle the cumin, salt, and chili powder over the onion/garlic and stir briefly to combine.
Add the black beans, and chiles and stir well.
Slowly drizzle in broth and stir well. Bring to a simmer and let simmer until thickened, about 30 minutes.
Taste-test and add more salt if needed. If desired, stir in a squeeze of fresh lime juice before serving (recommended). Serve warm.