Mince the onion. Cut the core of the cabbage, leaving 4-5 outer leaves intact, and coarsely chop the inner leaves.

Place the minced onion in a microwave-safe container, cover loosely with plastic wrap, and microwave at 600W for 1 minute. Let it cool.

In a bowl, mix breadcrumbs and beaten egg, then add the remaining meat filling ingredients and chopped cabbage. Mix until sticky.

Dust the hollowed cabbage with flour and stuff it with the meat filling.

Place the stuffed cabbage in a pot with the meat side down. Add the seasoning ingredients and bring to a boil over medium heat. Cover and simmer on low heat for 30 minutes.