My aunt Rena taught me a little tip I thought was interesting: Put OATS in your meatballs!
Last night we had meatball sandwiches. I just added 3/4 cup of old fashioned OATS to 2 lbs meat, 3 egg yolks & seasonings. I put them in the crockpot on low for 5 to 6 hours with sauce to cook. They held together well and tasted great.