Heat oil. Heat oil in a medium saucepan over medium-high heat.
Sauté vegetables. Add onions and jalapeños and season with salt. Let cook, stirring occasionally, until starting to brown.
Add garlic and spices. Add garlic, cumin, chili powder, coriander, and dried oregano. Cook, stirring to toast the spices 1 minute more.
Add black beans. Add black beans, juice and all, and bring to a simmer. Simmer about 5 minutes. Mash a bit with a potato masher to make them nice and creamy. You don't want to make a puree, just break some up to thicken the beans.
Enjoy! Serve as a side or as a main meal with rice or with eggs and tortillas for breakfast.
