Sonoran-style beans mashed and stirred with melted cheese and butter until stretchy and creamy. This indulgent, protein-rich family side dish is the ultimate comfort food from the north.
In a large skillet, melt the butter over medium heat until just foamy, then add the diced onion and sauté for 5–6 minutes until translucent and fragrant.
Add cooked and drained pinto beans to the pan and stir to combine with onions. Allow beans to heat through, about 2–3 minutes.
Begin mashing the beans with a potato masher directly in the skillet, adjusting the heat to medium-low so the mixture simmers but does not stick or burn.
Season with kosher salt and black pepper, stirring constantly to keep a creamy consistency. Adjust heat lower if beans begin to dry out.
Gradually sprinkle in shredded Oaxaca cheese, stirring vigorously and continuously as the cheese melts and the beans become stretchy, for about 5–7 minutes, until thoroughly incorporated and smooth.
Taste, adjust salt or pepper if needed, and serve hot, ensuring the mixture remains creamy and elastic while spooning out.