Sweet and Sour Meatballs in Oven

3 pounds ground beef

⅓ cup dried onion flakes

1 ½ cups dry bread crumbs

1 tablespoon salt

1 teaspoon ground nutmeg

3 eggs

¾ cup milk

1 cup cider vinegar

2 cups brown sugar, firmly packed

2 tablespoons mustard powder

1 cup water, divided

2 tablespoons cornstarch

To make meatballs: In a large bowl, combine beef, onion flakes, bread crumbs, salt, nutmeg, eggs and milk.

Preheat oven to 400 degrees F (200 degrees C).

Shape mixture into 1 inch balls, and place into a 9x13 inch baking dish; bake in preheated oven for 10 minutes. Lower heat in oven to 350 degrees F (175 degrees C).

To make sauce: In a large saucepan over medium heat, mix vinegar, sugar, mustard and 1/2 cup water; bring to a boil, and boil for 1 minute. Mix cornstarch and 1/2 cup water; add to saucepan, and boil for 1 minute more.

Add sauce to cooked meatballs, and bake in preheated oven for 45 minutes, basting occasionally.