Sauté onion, green pepper and beef. Drain and add paprika, salt, basil and pepper. Cut up tomatoes and add to meat mixture. Simmer, uncovered, 30 minutes. Add cooked rice and beans. Place mixture in casserole. Add strips of cheese on the top. Bake, covered, for 20 minutes in oven at 350 degrees. Uncover and continue baking for 10 minutes.