Drain mushrooms, reserving juice. Add water to juice to make 2 cups liquid. Add
liquid, pizza sauce, rice, mushrooms, bell pepper, salt and oregano to beef; stir.
Bring to boil. Reduce heat, cover and simmer until liquid is absorbed, about 5 minutes.
Sprinkle Parmesan over and arrange mozzarella cheese on top of beef-rice mixture.
Cover skillet and heat for 2 to 3 minutes, or until cheese melts.