"I don't know how this recipe came to be, but we know my great-grandmother made this. It is made with diced ham in the oven and covered in bread crumbs. After shaping them, you can put cheese or anything you want into the middle for a filling. I personally like cream cheese or Cheddar cheese in mine but you can put whatever you want in the middle."
Mix ham, egg, mayonnaise, and half the breadcrumbs together in a bowl; shape into 6 meatballs. Spread the remaining breadcrumbs onto a plate; roll the balls in the breadcrumbs to coat. Arrange the balls in a baking dish.
Bake in the preheated oven until golden brown, 20 to 25 minutes.