I've been longing for a good Sour Cream Cookie recipe, too. I don't think we'll ever find one that tastes like our Grandma's until we intentionally Sour our own Cream, rather than use cultured sour cream. I honestly think that is the secret.
I remember seeing a pint jar of yucky cream sitting in my Grandmother's refrigerator,,, I can also remember seeing her literally scrape the top off the yuck before she added it to her cookie recipe. (I am 56 yrs. old,, I would guess I was 5 or 6 when I witnessed this,,, I don't know how many years Grandma had been using this method, but she died at age 93,, when I was aged 33,,, so we know this method didn't kill her)
Looking up my Baba's (grandma) recipe. I'll get back to you. Are you talking about the ones that are rolled and filled with a nut mixture or fruit? My daughter has a choral concert now that I need to attend, but I'll check later.