Preheat oven to 375°F (190°C).
In a mixing bowl, combine cooked rice, black beans, corn, shredded cheese, cumin, chili powder, salt, and black pepper.
Stuff each bell pepper with the rice mixture and place them in a baking dish.
Cover the baking dish with foil and bake for 30 minutes.
Remove the foil and bake for an additional 10 minutes, until the peppers are tender and the filling is heated through.
While the peppers are baking, prepare the chipotle cream by mixing sour cream, chipotle in adobo sauce, and lime juice in a small bowl.
Serve the stuffed peppers hot, drizzled with chipotle cream.