I used the NYT recipe by Tom Birchard and Natalie Danford. You can find it here.
https://cooking.nytimes.com/recipes/1014050-ukrainian-mushroom-and-onion-dumplings
I think this would be a fun recipe to play around with the filling to give it more of a kick, maybe add some pepper flakes or other spices. I also boiled and then pan-fried these to serve on the side of the borscht.