All-Day Meatballs

1 cup milk
3/4 cup quick-cooking oats
3 tablespoons finely chopped onion
1-1/2 teaspoons salt
1-1/2 pounds ground beef
1 cup ketchup
1/2 cup water
3 tablespoons cider vinegar
2 tablespoons sugar

In a bowl, combine the first four ingredients. Crumble beef over the mixture and mix well. Shape into 1-in. balls. Place in a 5-qt. slow cooker.

In a bowl, combine the ketchup, water, vinegar and sugar; mix well. Pour over meatballs. Cover and cook on low for 6-8 hours or until the meat is no longer pink. Makes 6 servings.