In a small pot, combine the rice and water. Cook on low heat until the water is absorbed. Let it cool.
In a pan, sauté the finely chopped onion with half of the ground beef in a little oil. Cook until lightly browned. If there is excess fat, drain lightly, then let it cool.
In a large bowl, combine: cooked rice, cooked beef mixture, remaining raw ground beef, egg, salt, pepper, and parsley. Mix well until fully combined.
Take portions about the size of a small egg. Flatten gently in your palm and shape into oval patties.
Place on a plate and refrigerate for 10 minutes to help them firm up.
Then coat each piece: First in breadcrumbs or flour, then dip into beaten eggs.
Fry in medium-hot oil for 3–4 minutes per side, until golden brown and cooked through.