STUFFED MEAT LOAF 1 and 1/3 cups water 1/3 cup milk 2 Tbsp. Butter 1 tsp. Salt 1 and 1/3 cups mashed potato flakes 1 egg beaten 1/3 cup quick-cooking oats 1/2 cup celery, diced 1/3 cup onion, diced 1/2 tsp. Pepper 1 pound ground beef 1 cup cheddar cheese, shredded 1/4 cup ketchup In a saucepan, combine water, milk, butter and salt and bring to a boil. Stir in mashed potato flakes and set aside. In a large bowl, combine egg, oats, celery, onion and pepper and mix. Add ground beef and mix well. Place beef mixture on a piece of wax paper and spread out to form a rectangle. Spread mashed potatoes over beef and sprinkle with cheese. Roll up and secure the seam. Place seam side up in a greased 13 x 9-inch baking dish Bake at 350 degrees for 30 minutes, pour ketchup over the top and cook another 20 minutes or until meat is fully cooked.