Soak the bread roll and squeeze it out very well, mix it with the meat in a bowl. Then knead well with the egg, mustard, salt, pepper, the herbs and the chopped garlic cloves.
Thaw the frozen spinach and squeeze it out well. Then roughly chop and mix with the meat mixture.
Shape 12 meatballs and fry for 3-4 minutes on each side.
Then place in a preheated oven at 180 ° on a baking sheet lined with baking paper and bake for about 20 minutes.