Freezer Cooking Day - Part 2 (Meatballs)

So I had some more time to do some freezer cooking so I whipped up a batch of meatballs to freeze for meatball subs. My meatball recipe is:

1 lb ground beef
1/4 c. onion
3/4 c. seasoned bread crumbs
1 egg slightly beaten

Mix them all up and then shape into meatballs should yield about 24-27.  Bake at 350 for 20 minutes.  Once cooled, place in plastic bag and freeze!  These freeze for up to 6 months!