For average 12 meatballs:
300g sausage meat
For the sandwiches:
½ red onion
tomato sauce or ketchup
Wash and chop the fresh herbs. Mix the meat, herbs, eggs, salt and pepper.
Take small amounts of the mixture and roll into ping-pong ball sized balls.
Flatten the balls and arrange them next to each other in a large frying pan. Cook the meatballs over medium heat until golden brown.
Turn them over and finish cooking.
Open the rolls without splitting completely.
Garnish with tomato sauce or ketchup then arrange 3 meatballs per sandwich.
Cut small pieces of mozzarella and place them in between the still warm meatballs.
Add the chopped herbs and half of the chopped onion. Enjoy!