Cheese stuffed meatballs Cut low moisture mozzarella cheese into 3/4 inch cubes cubes. Store in refrigerator while preparing the meat. In a large mixing bowl combine: 1 pound ground beef 1 pound hot Italian sausage 1/2 tsp garlic powder 2 tsp salt 1 tsp black pepper 1 cup bread crumbs 1/4 cup parmesan cheese 2 eggs 1/2 cup whole milk 1/2 cup chopped parsley Roll golf ball sized balls with the meat mixture. Squish mozzarella cube into the center and pull the edges of the meat ball around it until it’s a new ball again. Arrange meatballs in slow cooker and cover in tomato sauce. Cook on high for 2 to 2.5 hours. Tasty's photo.