I'm sad and greedy and skint and thus batch cook fairly regularly. Delia's Ragout from her winter collection is pretty scrum and doesn't need much doing to it other than shoving in oven. Use streaky bacon rather than pancetta to keep cost down.
Also fab recipe in John Burton-Race's French Leave for Beef en daube (beef in red wine) which you bung everything in a bowl overnight then do the cheat's cook version involving bunging it all in casserole and half heartedly frying, rather than his fiddly bit where you separate it all out, and then bung in oven.
Both these recipes make 8 good portions, and I buy those long metal trays like takeaways use. One of those serves me, but I suppose could serve 2 less greedy bods... Throw mash on top of beef stew to make all in one meal a la Tesco!
Lamb 'curry' is another easy one - cubed lamb, jar of tandoori paste, cumin, spices etc, loads of lemon and fresh coriander - leave overnight and then give it a rough fry the next day and bung in oven with stock or tinned toms...
Homemade pizza freezes really well and is tons cheaper. I use Nigella's hearthbread recipe for base, it makes a massive pizza and you can easily double quantities to make 2 bases. Bung on passatta or sacla red pesto if you're feeling flush, whatever toppings you fancy, cook, cool and portion up into tin foil ready to sling in oven after work.
I do feel smug on the occasions I manage to get 16 meals in the freezer in those shiny trays.. convenience food but with yumminess! And at least then there's an element of choice as to what I get to eat with minimum effort.
hmm.. too much bunging? Perhaps this should be another thread!