Preheat a skillet over medium heat and add a tablespoon of olive oil.
Add the rinsed black beans to the skillet in a single layer, allowing them to cook undisturbed for about 5 minutes until they start to pop and develop a slight golden crust.
Stir the beans gently, ensuring they are evenly coated with oil and begin to caramelize at the edges, releasing a toasted aroma.
Add the minced garlic and cumin to the skillet, stirring continuously to evenly distribute and prevent burning, cooking until the garlic is fragrant, about 1 minute.
Continue cooking the beans for another 5-7 minutes, stirring occasionally, until they are firm yet tender and the exterior is nicely caramelized and crispy.
Season with salt and pepper to taste, adjusting as needed and stirring to coat the beans evenly.
Remove from heat once the beans are glossy, crunchy on the outside, and flavorful, then transfer to a serving dish.