Brown ground beef; add tomato sauce, oregano, garlic salt, and white pepper. Remove from heat. Boil noodles 10 minutes, drain and add butter and seasonings. Combine cottage cheese, cream cheese, sour cream, onion and green pepper. Mix well with electric mixer. Lightly butter a 2 quart casserole and spread one-half of noodles. Cover with cheese mixture and add remaining noodles. Spoon on meat and sauce mixture. Bake 30-35 minutes at 350° F in covered casserole.