Pat into a 1" high rectangle, about 7" by 11" in the centre of a sheet of foil.
Transfer foil into a 9" by 13" pan.
Cut through into 1" squares.
Bake at 350F for 20 minutes.
Remove pan from oven and separate squares a little bit, using a spatula or long knife.
Return to oven and bake another 10-15 minutes until cooked through.
Drain and cool meatballs (or squares) and freeze on a cookie sheet. Package up when frozen and use in any recipe calling for meatballs. (I substitute them for the meat cubes in Oven Mushroom Stew, which I will also be posting today).