Lasagna Casserole
["1 (8 oz.) pkg. lasagna, cooked by pkg. directions", "1 lb. ground beef, browned", "1 large jar spaghetti sauce with onions", "mushrooms", "16 oz. Ricotta cheese", "4 eggs, beaten", "10 oz. sharp Cheddar cheese, grated", "10 oz. Mozzarella cheese, grated", "1 small jar sliced mushrooms"]
["Add first mushrooms to spaghetti sauce.", "Add spaghetti sauce mixture to ground beef.", "Add beaten eggs to Ricotta cheese. Spread a layer of sauce mixture over bottom of dish.", "Place noodles on top of this and spread Ricotta mixture over noodles. Place a layer of meat sauce over Ricotta.", "Add cheeses on top of this.", "Start with another layer of noodles, ending with grated cheese on top.", "Bake at 350\u00b0 for 30 minutes."]
["lasagna", "ground beef", "onions", "mushrooms", "Ricotta cheese", "eggs", "Cheddar cheese", "Mozzarella cheese", "mushrooms"]