Put the mince in a bowl, clean and chop the onion finely, add it, season with the spices, add the egg and breadcrumbs. Stir and knead the dough. Form meatballs of the same size.
Pour the olive oil in a pot, add the meatballs and braise on all sides until golden.
Peel and cut the onion and carrot, add them to the meatballs in the pan and braise briefly until softened.
Drop the meatballs in the mixture, add the green beans and boil until ready, about 30 min.