Sharon's Lasagna

Brown the ground beef, onion, celery and green pepper. Blend in tomato paste, salt, pepper, thyme, Tabasco and Worcestershire sauce. Continue to cook, stirring occasionally for 5 minutes. Remove from heat and set aside. Blend sour cream and noodles together. Place a layer of half of noodle mixture in bottom of buttered casserole. Spread a layer of meat mixture over noodles. Top with Mozzarella and cottage cheese. Add another layer of noodles and end with meat on top. Bake for 25 minutes at 350ºF.  Yield 6 -8 servings