Soak the bun. Finely chop parsley and onion and fry lightly in butter. Squeeze out the bun.
Put the rolls, parsley, onion, minced meat and egg in a bowl. Peel the garlic clove, press it through the garlic press and add. Add the parmesan, basil and oregano, salt, pepper and paprika, mix everything thoroughly and form 6 meatballs of the same size from the meat dough.
Heat the oil in a pan, fry the meatballs on both sides and then put them in an ovenproof dish. Wash the tomato, remove the stem, cut the tomato into slices and distribute the tomato slices on the meatballs. Cut the mozzarella into slices and place on the tomato slices.
Gratinate in the oven for approx. 15 minutes at 180 ° C.