1/2 (8 oz.) pkg. manicotti shells
2 c. ricotta or cream style cottage cheese
1 (8 oz.) pkg. diced Mozzarella
1 lg. egg
2 tbsp. parsley
1 tsp. salt
1 lb. ground beef
1 jar spaghetti sauce with mushrooms
1 tbsp. instant minced onion
1 tsp. garlic salt
1 tsp. sugar

Cook shells until tender. Pour off cooking water; add cold water to cover. Combine cheeses, egg, parsley and salt in bowl. Remove shells from water one at a time. Drain well. Fill with cheese mixture. Brown ground beef break up in small pieces. Combine sauce, onion, garlic salt and sugar; mix with meat. Spoon 1/2 the sauce into 13 x 9 x 2 inch dish. Arrange filled manicotti in single layer. Top with rest of sauce. Cover with foil. Bake 30 minutes in 350 degree oven. Let stand 10 minutes before serving.