In a large pan, heat olive oil over medium heat. Add the onion and saute until soft and translucent, about 5 minutes. Add garlic and continue sauteing another 2 minutes. Add the jalapeno pepper then the corn; stir well. Add chili powder and cumin and stir together until mixed.
Add beans and drained tomatoes; stir well. Remove from heat and fold in the prepared rice, incorporating all ingredients. Add cheese and stir together until cheese is distributed and melted. Salt and pepper to taste, if desired. Sprinkle remaining cheese on top. (If your rice is cold, placing the lid on top a few minutes should warm it through.).
Serve with a variety of toppings: chopped cilantro, green onions, sour cream, avocado slices and chips or flour tortillas.