Years ago I had a landlady, Russian, who baked bread. The bread was great but, she had an improvement which I'd love to find. This whole concoction was baked in a large cake pan.
The bottom and top were bread and there was a filling of hamburger, onion and cabbage.
It seemed each one was separate, so there was filling in the middle and bread around each one.
I'm probably way off with the name, but maybe Krapka. Any ideas?
I'm guessing this was the forerunner to the American hamburger.