Wash cabbage leaves.. Boil a pan of water then add cabbage leaves and switch off..
Leave to soak for 5 minutes

Removes leaves and drain.. And cool..
In a large bowl mix together the beef, rice, egg, salt/pepper and cinnamon mixing well...

Place about 2 tablespoons of the beef mixture into one cabbage leaf.. Roll them tightly

Then proceed to spray slow cooker then stack rolls..
Cover with the tomato pasta sauce

Cook on high for 1 hour then turn down and cook on low for 6-7 hours