Cut peppers in halves lengthwise, remove seeds. Cook in boiling, salted water for 5 minutes; invert and drain thoroughly.
Combine salt, pepper, Worcestershire, oats, egg, 1 1/3 cups tomato sauce, onion and ground beef, mixing thoroughly. Pack about 1/2 cup mixture into each pepper half. Place peppers in 12 x 8 inch baking dish. Top each stuffed pepper with 2 teaspoons tomato sauce. Bake at 350 degrees for 30-35 minutes. Makes 6-8 servings.