Preheat oven to 375.
In a bowl, combine the beef, rice, milk, onion salt and pepper.
Shape meat/rice mixture into meatballs. I use a small cookie scoop to do this and keep them all uniform.
Place meatballs in a large skillet and brown. You just want to brown the outside, they will finish cooking in the oven.
Place browned meatballs in a 9 x 13 inch baking dish.
In the skillet you cooked the meatballs in, add the soup and water. You want to get all the bits in the bottom of the pan from browning the meatballs mixed in with the soup.
Pour the soup mixture over the meatballs in the baking dish. Cover the dish with foil.
Bake for 30 minutes. Remove foil and give a stir.
Cover back with foil and bake for 15 more minutes.