Yep pasta sauce is a great one! Chow mein is also good but I couldn't eat it as I was bf and cabbage made DD super windy and cranky.

Other things that I did were:
Quiche
Crumbed chicken or beef schnitzel
Meatballs
Casserole
Soups
Shepherds Pie
Lasagne
Spinach and ricotta cannelloni
Cakes/muffins for visitors

Good idea to stock up on frozen vegies too - quick and easy! They were a godsend for me in the first few weeks. We also used the slow cooker quite a lot in the early days to cook roasts etc - so easy for DH or myself to turn it on in the morning and then dinner would take care of itself.