Cut tops off of the peppers and discard; remove seeds.
Blanch peppers in boiling water for 5 min. Drain and rinse in cold water; set aside.
In a bowl, combine beef, 1/4 c. tomato sauce, rice, 2 T. cheese, onion Worcestershire sauce, salt, pepper and egg; mix well.
Stuff the peppers; place in an ungreased 1 1/2 qt. baking dish. Pour the remaining tomato sauce over peppers.
Cover and bake at 350 for 45-60 min. or until meat is no longer pink and peppers are tender.
Sprinkle with the remaining cheese; return to the oven for 5 min. or until cheese is melted.