I made these for Father's Day. They were good, not great. Parmesan was not the best choice of cheese. A melting cheese would be better. I made the Italian version with cooked ground sirloin that I had in the freezer. Hot sausage would have been more flavorful. The broiler made the topping a little crisp which added texture but they really lacked flavor.
I just made the Vietnamese pork filling variation last night. It was simply delicious! Can't wait to try the lamb filling!