Caramelize onions in a pot with oil over medium heat.
Allow onions to get some color, add the garlic, allowing for caramelization to occur with the garlic as well.
Deglaze with sherry or a bit of water (optional).
Add the black beans, cumin, and red bell pepper.
Add the vegetable stock, and cook until all ingredients are soft.
Puree the soup with an immersion blender or vitamix.
Top with cilantro, serve and enjoy!