Drain and chop the peppers if needed. They’re already friendly, but give them a rough chop so they blend nicely.
Sauté onions and garlic in a little oil until translucent and smelling amazing, about 3–4 minutes.
Add corn and black beans; cook for another 2–3 minutes. Gustatory high-five achieved.
Stir in the chopped poblano peppers, cumin, chili powder, salt, and pepper. Simmer 2 minutes to let the flavors mingle like old friends.
Turn off heat. Stir in sour cream and half the cheese until creamy. Spoon into a serving dish or skillet.
Top with the remaining cheese. Optional: broil for 1–2 minutes until the cheese is bubbly and golden.
Garnish with cilantro and a squeeze of lime if you’re feeling fancy. Serve hot.