Fill a large pot half full with water; bring to a boil. Meanwhile, cut tops off of peppers and remove the seeds. Chop pepper tops; set aside. Add whole peppers to boiling water. Reduce heat and cook, covered, for four minutes.
Meanwhile, in a medium saucepan combined the pepper tops, black beans, corn, onions, uncooked rice, salt and 1/2 cup vegetable broth. Bring to a boiling; reduce heat. Cover and simmer for 15 minutes or until rice is tender. Stir in cilantro and half of the cheese; toss to mix.
Fill peppers with rice mixture. Place peppers in a glass baking dish; sprinkle with remaining cheese. Bake at 400 degrees for about 15 minutes or till cheese melts.