World's BEST Meatballs

2 lbs of lean ground beef
1 small onion, finely chopped
2 Tablespoons cornstarch
1/2 teaspoon black pepper
1 teaspoon salt
1 cup finely crushed Italian bread crumbs
2 eggs

Mix all the ingredients together (preferably with your hands) until all are combined. Shape into ping pong ball sized meatballs. Place on a lightly greased cookie sheet and bake 350 degrees for about 30 minutes. This makes about 50 meatballs and if you don't use them all in your sauce you can freeze them in a zipper baggie and take out as many as you need.