||Cut ¼ inch slice from top of each pepper and remove seeds.
||Add ½ tsp salt to enough boiling water to cover peppers. Cook peppers about 5 minutes. Drain. (This step can also be done - easier! - in the microwave!)
||Melt butter in skillet, add onion and cook until lightly browned.
||Add meat and cook, stirring with a fork to break meat up, until meat looses its red color.
||Add rice, tomato sauce, ½ tsp salt and oregano and mix well.
||Fill peppers with mixture and place upright in shallow baking pan. Add a small amount of water and bake at 350° degrees 20 to 25 minutes.
||Place cheese slices on top of peppers and leave in oven until melted.