Zucchini Lasagna
["1/2 lb. ground beef", "1/3 c. chopped onion", "1 (15 oz.) can tomato sauce", "4 medium zucchini", "1 c. cottage cheese", "2 Tbsp. flour", "1/2 c. shredded Mozzarella cheese", "1/2 tsp. salt", "1/2 tsp. oregano", "1/4 tsp. basil", "1/8 tsp. pepper", "1 egg"]
["About 1 1/2 hours before serving, preheat oven to 375\u00b0.", "In a 10-inch skillet saute beef and onion until onion is tender, about 10 minutes."]
["ground beef", "onion", "tomato sauce", "zucchini", "cottage cheese", "flour", "Mozzarella cheese", "salt", "oregano", "basil", "pepper", "egg"]