Beef strog
Spag Bol
Beef/red wine/garlic casserole
Silverside (haven't tried it reheated though)
Butter chicken
Beef goulash

I use the slow cooker packets too and find a lot of them do well reheated. Although I always do double the packets to ingredients listed so it's extra saucy and better when reheated
I do the same love lots of sauce!!! I have used left over beef stroganoff to make pot pies the next day as well.