Heat the oil in a large skillet or cast iron skillet over medium heat. Add the minced onions and jalapeños. Saute the onions until softened, about 3 to 4 minutes.
Add the minced garlic and cook for another 1 to 2 minutes.
Add the cumin, chili powder, smoked paprika, salt, and black pepper to the cooked onion mixture.
Drain and rinse the black beans and add to the pan and toss until evenly combined with the spices.
Start mashing the black beans with a potato masher and slowly start pouring in the water and stir to incorporate. Continue to mash with the potato masher until no whole or partial beans remain. You can choose to leave it a little chunky or continue to mash until completely smooth.
Bring mixture to simmer over medium heat and cook, stirring and scraping the bottom of the pan, until liquid is fully incorporated and beans are heated through. The beans may look liquidy but they thicken as they cool. Be sure to use the entire ¾ cup of liquid to prevent the black beans from drying out.
Taste and add more salt and pepper, if needed. Serve as desired!