@nana59 My family doesn't have a real written recipe. We dump and taste.
But here goes.
Use a mixture of ground beef or 3 parts beef, 1 part ground pork.
Add raw eggs, onions chopped small, lots of Freshly grated Parm and Romano cheese
salt, pepper and lots of fresh parsley and fresh bread. Wet the bread and squeeze out moisture then tear and smush into small pieces. Mix well.
Roll into tight ballls, if too loose, they will fall apart while cooking. Fry in a little olive oil until brown on the outside.
My sisters bake them in the oven on a cookie sheet. I don't, but that works well too.