Hi,
From my copy of
Yugoslav Cookbook by Olga Novak-Markovic, she uses Serbo-Croat names for some cookies and others are in English-only. There is a recipe Crescent Cookies:
Vanilla Crescents
280 g (10 oz) flour
210 g (7 oz) butter
100 g (3.5 oz) ground almonds or walnuts
70 g (2.5 oz) castor sugar
2 egg yolks
20 g (0.75 oz) vanilla sugar
Sift flour onto a board and add chopped butter, ground walnuts, castor sugar and egg yolks. Mix it briskly and make into a roll. Leave the pastry to stand for 30 minutes in the refrigerator. Shape the crescents and place them on a greased cookie sheet. Bake at quite a high temperature. While still hot, roll in vanilla sugar.
Vanilla sugar can be prepared at home by leaving a few vanilla pods in castor sugar for a few days.
Please note the gram-ounce conversions are from the book. I would verify those proportions yourself.
Castor sugar is fine sugar, though granulated is ok. Please note their daily sugar is (or was) far coarser than ours.
If you are not satisfied with either cookie, then let me know. I can ask someone in Zagreb, who may or may not know what you are talking about. Also there are several Serbian Orthodox monasteries and churches in Lake county who may be able to help. There is also a Croatian Cultural Center on Devon Ave, which is largely a party hall it seems. I would imagine someone might recognize what you are looking for, too.
I had a similar odyssey long ago replicating my Grandmother's recipes after she died. I have been largely successful, though it took time and some trial and error. If and when you find what you like, please report back.
Regards,