I happen to have a copy of "Bruculinu, America" at home. Looking for rice recipes at roughly those positions in the book, it's either "Tumala d'Andrea: Rice Bombe" (blue bookmark) or "Arancini al Burru: Rice Balls with Butter".

I'm going to guess it's Arancini al Burru, because the Tumala d'Andrea is way more involved (and stuffed with pasta)[0]. Here's a similar recipe for Arancini al Burru[1].

However, Arancini al Burru is fried and Tumala d'Andrea is baked. So I'm still speculating, it could be either or something different. It's a nice cookbook worth adding to your collection.

[0] https://inasmallkitchen.wordpress.com/2012/08/12/tumala-dand... [1] https://www.196flavors.com/arancini-al-burro/