Pizza Casserole
["1 1/2 lb. ground beef", "1 medium onion", "1 tsp. salt", "1/2 tsp. pepper", "2 cans tomato sauce", "1 can mushrooms", "1 pkg. macaroni", "1 egg", "1/2 c. milk", "oregano", "pizza cheese"]
["Cook macaroni; drain.", "Add egg and milk; mix together.", "Layer in casserole dish:", "1st layer, macaroni; 2nd layer, meat mixture and 3rd layer, sprinkle oregano and cover with pizza cheese. Repeat until all ingredients are gone.", "Bake at 350\u00b0 for 30 minutes."]
["ground beef", "onion", "salt", "pepper", "tomato sauce", "mushrooms", "macaroni", "egg", "milk", "oregano", "pizza cheese"]