Hamburger Hot Dish
["1 1/2 lb. hamburger", "1 onion", "1 c. milk", "1 c. flour", "2 eggs", "1 tsp. salt", "1 Tbsp. oil", "1 (15 oz.) jar Ragu spaghetti sauce", "Mozzarella cheese slices", "Cheddar cheese, shredded"]
["Brown hamburger and onion.", "Drain off fat.", "Mix hamburger and spaghetti sauce.", "Place in a 9 x 13-inch pan.", "Top with Mozzarella cheese slices.", "Put in 400\u00b0 oven while you mix flour, milk, eggs, oil and salt together.", "Remove pan from oven and pour this mixture over it.", "Top with shredded Cheddar cheese.", "Bake at 350\u00b0 for 30 minutes."]
["hamburger", "onion", "milk", "flour", "eggs", "salt", "oil", "spaghetti sauce", "Mozzarella cheese", "Cheddar cheese"]