Preheat the Oven to 375ยบ.
Mix Ground Beef with Water and Milk in a Large Bowl using your hands until Beef is evenly moistened.
2 Pounds Ground Beef, 2 Tablespoons Water, 1 Tablespoons Milk
Mix Bread Crumbs, Onion, Potato, Apple, and Egg into the Beef mixture until evenly integrated.
1 Cup Bread Crumbs, 1 Onion, 1 Potato, 1 Granny Smith Apple, 1 Egg
Form the Beef mixture into a Loaf.
Transfer the Meatloaf to a Deep Baking Dish, Tent with Oven Safe Cover.
Bake in preheated Oven for 1 hour; remove Tent and Bake until no longer pink in the center, about 30 minutes more.